how far should fan clutch be from radiator.
There are 4 nuts that attach the back of the fan clutch to studs on the water pump hub.But i notice you mentioned the exchanger fan will turn on 10 min after it is off, this is very long, the fan may have problem too.The problem starts when you stop and sit in traffic.A temperature probe installs in the radiator core, and the fan turns on and off automatically.An improperly operating fan clutch will impact overall performance of the engine and A/C system.Fans move air through the radiator assisting in cooling the engine.This is how the factory does it, with the fan in the correct position at the shroud lip the air can escape off the blade tips pulling more air through the core, if the fan is too far into the shroud it chokes off this tip flow.to/2DOTdpfIn this video we will be using MaxiSys MS908P to test the radiator fan on this BMW e.Remove the four (4) mounting nuts holding the fan clutch to the fan pulley.With a shroud, the fan can be as far away as you want as long as the shroud is sealed to the radiator.Therefore, the 4 corners and center where the clutch is will only get part of the airflow through them.CHECK THE RADIATOR CLUTCH FAN 1.A shroud is your best bet for a cool engine if your spinning a fan from the engine.The fan clutch can slip, which would prevent the fan from cooling the engine at low speeds.If this component is not in working condition, you might get into a lot of trouble as far as your car is concerned.Here's a list of the most common fan clutch noises and what each one could mean: 1.Turn of AC and it drops to 200.This means that almost 49% of the unshrouded radiator is not receiving any benefits from the fan.Proper placement of the fan in the shroud should have the blade about 2/3 out of the back of the fan shroud.Make sure you use one in your vehicle.Okay - I have a Hayden 2764 fan clutch, which as far as I know, is the shortest available.Posted - 01/18/2006 : 1:09:14 PM.A radiator fan has an important role of keeping a vehicle's engine cool.Any suggestions will be most welcome.Caution This is Not Always The Fan Shroud.You cannot get a clutch fan that close to the core.A second fan, for the condenser.to/ia/1ARFA000951A Auto shows you how to repair, install, fix, change or replace a broken.It’s often compared to a jet engine.The second problem a fan clutch can have is the opposite problem.It's viscous as opposed to electric/viscous.They came stock on L78's which had a redline of 6000rpm.I'm using the same clutch and fan on my 56 with a 350.I've got a 390 with a 4 core radiator and the clearance between the front of the fan clutch and the radiator core is very tight.No spacer on a original clutch fan.One inch of a 4" blade is out of the shroud.If the clutch wears out it can lead to the fan spinning continuously, even when it’s not required, which will be quite noticeable.If the electric fan is big enough and really powerful, it can equal the cooling performance of a heavy duty fan clutch.Fan manufacturers have continued to reduce the thickness of the fans and now there is a shroud from Cool Craft that when combined with the fan only measures 2-5/8-inches thick.In my case, I used a universal 1/2" spacer behind the new fan clutch assembly to get the fan to sit at the the proper location approximately halfway into the existing radiator shroud.Generally, it is located at the rear of a radiator controlling fan speed .I am a parts rep for Michigan Bus Parts in Detroit , MI.Tersedia ✓ Gratis Ongkir ✓ Pengiriman Sampai di Hari .READY STOCK VISCO FAN - CLUTCH FAN RADIATOR ISUZU PANTHER ORIGINAL di Tokopedia ∙ Promo Pengguna Baru ∙ Cicilan 0% ∙ Kurir Instan.Designed to meet/exceed OE fit, form and function.Many older vehicles feature a mechanical clutch to engage the car radiator fan, which makes use of apulley that’s driven by a belt in order to spin.I'm currently running a stock clutch fan from an '83 6.I've also seen the all aluminum ones, and a couple with dual 14" electric fans included.Took it on about 4 or 5 10 minute trips so far.If you turn the car on and the engagement does not take place, you could have a problem.The V-6 electric fan replaces the electric fan already in your truck.The last measurement you should check is the distance from the face of the fan to the radiator.AFTER AN INSTALLATION IS COMPLETED A THOROUGH INSPECTION OF THE INSTALLATION NEEDS TO BE PERFORMED,.I went too far and built a four-row, high density, killer radiator.Basically, a fan clutch allows the fan to slip during acceleration so as not to rob power from the engine.But will engage fully at idle or, if it a thermal clutch, when the heat coming off of the radiator is high.On vehicles with a conventional radiator fan, inspect the fan for damage.Insert and tighten the four 13mm bolts.Beli Produk Clutch Fan Radiator Berkualitas Dengan Harga Murah dari Berbagai Pelapak di Indonesia.If the goal is to determine the root cause of the issue (faulty fan clutch or the control circuit): -unplug the fan clutch connector.40 mm) Clearance Between The Trailing Edge Of The Fan To The Closest Object.Before the clutch fan was invented, a fixed-style radiator fan was directly attached to the engine.Your aircon mechanic should be able to advise.for best cooling a fan need's to be about 2" to 5" from the radiator.I was wondering how far my fan clutch should be away from my radiator to work correctly? 1"or is 2"'s to far?thanks bm.If it is just blowing gently, replace the clutch.91 inches front to back and you really can't replace a fan belt easily.After fixing the radiator on my 1958 Buick Special, I wanted to improve the cooling ability a bit more, quiet down the fan noise, and see if I could gain a few horsepower in the process.Buy Now!New Radiator Cooling Fan Blade from 1AAuto.I dug the old fan clutch out of the scrap metal pile and it was 1/4" should have been the same mounting distance and performance but is .The very important shroud should have 2/3 of the fan inside the shroud and 1/3 of the .06 4300 dt 466 , new surge cap, water pump, radiator, fan clutch, thermostat, hoses, belt, and still runs hot at 65 empty.Clutch style fans and the like, use a .When one part fails it typically affects the operation of the other.How can I check if the clutch fan is.Mechanical fans discharge a lot of air centrifugally, and many mechanical fans were specifically engineered to discharge air centrifugally.During this time, the E350 is characterized by a 3.The fan clutch for around $180 is capable of maintaining 80-85 degrees celsius constant temperature.There's no sign of belt slippage, but the radiator cooling fan barely seems to be spinning.Even though the air has been heated by passing through the radiator, it is still much less hot then the engine surface, so the airflow over the .You may wish to order the Spal Fan Mounting Kit 91064065.The fan shown in the far left.Hi, New here, just purchased a 1980 280zx and going through everything to get it mechanically sound.The cooling fan in the engine compartment, should turn on to pull air through the radiator and A/C condenser.I went with the Taurus/Lincoln radiator fan system from a 94-5 with the 3.Well sure enough, I removed the Sinister Diesel EGR block off plate and re-installed the old EGR Valve, plugged it in and the Fan Clutch system seems to work again.Ford specified 1" clearance for fixed fans, but clutch fans must always be used with a shroud, due to the impossibility of getting the fan within 1" of the core.After splicing the wire everything is working as it should be.LB7 blade, Hayden #2886 clutch and Goodyear Gatorback belt is on the way.The stamped blade and correct spacer are approx 3/4" from the radiator and has improved cooling immensely.Clutch Bleed system, Clutch cylinders, Pedal adjustment, R&R and overhaul, Release bearing, Tractor split.Going to run without a fan shroud until I can order one that will fit as jam unable to make the flex fan shroud work due to larger fan blades.Might get a little annoying how often it comes on, but that will be totally worth it for the peace of mind of a cool engine.But now from radiator to first blade edge there is about 4,5 inch.One option you may consider is the 7.With the correct offset, you can install a 3 core radiator and the HD fan clutch and have approximately 1/4" clearance.As we all know, or should, fans are not needed at speed.If you have the wrong offset on your radiator, there will not be sufficient space to install a fan clutch.1/4 inch away from the radiator.As far as I remember, all nuts and.Assuming it takes 1HP to turn the electric fan: 745W = 62A at 12V. SACHS Fan Clutches for Commercial Vehicles (CV). A surefire way to tell if it's shot is to stick a screwdriver in the fan when it's hot.Learn more about the importance of using a fan and shroud with our radiators by reading our tech article.Position the strap wrench to the water pump's pulley to keep the pulley from turning while you take off the bolt on the front of the water pump where the fan clutch is attached.Depressing the clutch and then further releasing it should now allow revs to increase above this range to the rev limit.Steps for replacing water pump fan & clutch assembly & radiator with aftermarket.A larger fan can cause air to pass through the open area.You need to position the clutch/fan so that half of the fan is in the shroud, likewise the other half is outside the shroud lip.Recently I had the freon recharged, a new belt, and new fan clutch put in my truck.When you think of an automotive cooling system, the first thing that likely comes to mind is your radiator…or maybe your cooling fan.Or 70% with a standard duty clutch.But the farther away the fan is from the radiator, the .First,you should have a fan pulley wrench (Harbor Freight belt type) to hold the pulley while removing and installing the four nuts on the hub.The "general rule of thumb" when you have a fan shroud: The fan is mounted so the blades are half way inside the fan shroud and half way outside the fan shroud.Although you can use two small fans, one large fan 14" - 16" typically works better.The flex fan didn't appear until years later, when Ford was cutting corners to save money.The fan clutch is designed to adjust automatically depending on the heat the engine is producing.Push or lift the fan shroud out of the way.Unplug and remove old fan, install new fan and plug into same connector.Noticed zero difference between the two at idle as far as cooling temp with the five blade Mopar performance viscous fan The 2797 is a little over 1/4" taller or will get you closer to the radiator as far as the clutch only Fan spacing between the two Hayden’s and the Mopar version fan clutch that came that package fan are all equal or very close.A fan clutch is attached to the front of an engine on rear wheel drive cars and trucks only.The fan blades should be 1/2 in, 1/2 out of the shroud opening.Thermal cooling fan clutch reacts to heat from radiator.Hardware should be included with most fan kits.Yes, you can drive your car without a radiator fan, but you never should.Most fan clutches also lock or partially lock up at idle.• Install a fan shroud, but do it correctly.The final photos show this quite nicely.There should be no wobble laterally (front to back, toward and away from the radiator) in the fan clutch.If the fan is turning freely with no clutch, then there is a problem with either the belt being loose or the pulley will need adjustments.There is also the problem of mounting the fan clutch to the water pump hub.A fan clutch is a temperature-controlled coupling between the water pump shaft and the fan which allows the fan to be operational at low speeds and disconnected at higher speeds.Finally since it is a thicker unit, you will have to deal with the fan.It's the hot air blowing back from the radiator that causes the thermal spring to wind/unwind.You have much better things to spend your hard earned dough on than that, you know - suspension parts, tires, extracation tools, tunes, etc.How? By converting from the original 4 blade "fixed" style fan to a modern thermostatically controlled clutch fan with more blades - in this case I used a.You may be 2" away from the radiator but what is the relationship of the fan to the shroud.Mounted on the engine side of the radiator, a pull fan does not interfere with airflow at highway speeds.When I install I will also be pulling my cooling stack to.302DZ, Autogear M22, Red w/black stripes.Minimum Fan Blade Clearances To Front of Fan – Minimum of 1” (25.However, pushers can struggle to move air across the whole surface of the radiator.5" blade clearance from the radiator.05 mm) From The First Obstacle To The Sides.Use of the incorrect fan clutch may result in poor cooling, excessive noise, reduced fuel economy or fan clutch failure.As an example, let's say the radiator core is 20 in.Of course, I didn't know I needed a special tool for this so I am trying to use an Allen wrench to hold the pulley in place so I can loosen the 8mm bolt holding the fan clutch in place.I bought a fan clutch conversion hub made by strictly diesel, and a Cummins 06 six bolt fan, and a 1997 Ford Powerstroke viscuous fan clutch.It is supposed to engage at 200° instead of mine which engaged at 226°.In certain applications, aftermarket spacers are needed to position the fans closer to the core of the radiator.This is the fastest and easiest way to test your radiator fans.When the engine is off and cool enough to touch, a mechanic should be able to grab the fan and spin it only with reluctance.When you move the throttle linkage to rev the engine .We can do the same thing with regards to an electric fan and factor in the inefficiency of the alternator and the fan motor.If you are, then it should be no real feat to move the radiator forward and fabricate mounts off the core support.Factory added a shroud, fan should be set so 1/2 the blade width is in the shroud and 1/2 is back behind the shroud lip.New radiators installed in your car by Natrad come with a national three-year warranty.It fits the radiator almost perfectly, with a slight angle.How much does it cost to replace a fan clutch? For a clutch fan replacement, you will pay between $140 and $400, depending on the kind of car you own.5" spacer with the original flex fan and have 1" from radiator.In our hot weather climate, the compresor will turn on in less than a minute or two, 10 min sounds far too long.The outside diameter is 46 cm (18 inch) - the radiator itself is 44 cm x 48 cm (17 x 18 inch) - The car has also an A/C cooler in front of the radiator My questions are: 1.Normally the fan would engage at this time, providing airflow.and have 3/4" to 1" clearance fan to shroud.Fan Operation Newbie here so be gentle! My 2000 Z3 M52TU engine has the belt driven fan behind the radiator and the electric fan ahead of the radiator.This clutch is thermally controlled so that as the heat under the hood increases the resistance drives the blades faster pulling air through the radiator and cooling the system.when I first start the truck, I turn the AC on because it's about 111-115 degrees in the daytime out here now, and after driving for a couple of minutes if I pull into the gas station or something and leave it run, when I get back out the.The very important shroud should have 2/3 of the fan inside the shroud and 1/3 of the fan outside the shroud.You will still have a whine with a new one.Insert the fan clutch pulley wrench into the pulley.At crawly speeds, a booster electric fan is essential to force enough air through the dense fins.It should be about 1 to 1 1/4" away, safe and seems to work the best, good luck.This problem can be detected by.The fan clutch takes the blame for the overheating when the radiator is at .Hi all, I am replacing the water pump on my 1989 260E and I need to remove the fan clutch.and you need a shroud! they will make the fan more efenctant.Re: proper fan spacing into radiator schroud 06-04-02 04:08 PM - Post# 75555 In response to ss3964spd I went to junkyard today and located a 17 diameter clutch fan, got it home and the spacing of hub bolts are further apart from a mid 90s car to a 60s top pulley.This will give it time for the fan clutch to loosen up.Preference should be given to a "pull" vs.Perform the POWERTRAIN VERIFICATION TEST - 6.Then I remove the upper radiator hose, the tranny cooler lines from the shroud, and then i will remove the fan clutch.Just installed one of the El Cheapo 1" thick radiators in my '72 ahead of a 400 small block.Clutch fans lost between 8 and 19 hp depending upon the clutch model, while a Flex-a-lite Black Magic electric fan driven by the alternator cost 1 hp.One issue I've noticed is the radiator fan is always on as soon as the motor comes on (in a cooler climate, temps have been about 20 Fahrenheit ) I've checked the fan clutch and it appears to operate fine and isn't seized / spins freely when the car is off, also the temp gauge appears to work.The fan clutch should have resistance when motor is off.You can switch the two leads on the motor to reverse the fan direction, hopefully that is the correct direction for the blade design.I’m using the same clutch and fan on my 56 with a 350.Hey everybody, i have just finished mounting an electric fan on to my Yj 4.All fan clutches are for specific applications and should be applied only on the vehicle for which they are cataloged.Thermal fan clutches have a temperature-sensitive bimetal coil spring on the front that reacts to temperature changes.Check the fan clutch front and back see if it looks like a oil leak.In many cases, the radiator fan will cost around $400 to $450, while the labor adds $150 to $200.This Flex-a-lite electric fan came with an adjustable control unit.Not as easy as some say but it is doable if you have enough tools and a whole Saturday to do it.By the time it came to installing the engine driven cooling fan, I had a ton of parts laying around from various Ford V8's - some standard "clockwise rotation" fans and some reverse "counterclockwise rotation" fans from engines with serpentine belt drives.(You do have to take the fan and clutch off first.I might be able to help, if its not to late, we carry a full line of aftermarket fan clutchs.Before UFI fan/clutch, towing camper on a day 35 or more it was not possible to use air con.In many cases, a puller fan is the better choice.Without enough air over the radiator core, your engine can overheat in a matter of minutes.The clutch senses the temperature of the air passing through the radiator and .This condition will cause the engine to overheat because the fan fails to pull the necessary air through the radiator that cools the engine by the use of the systems coolant.Caution Not Always The Radiator.Power figures: 240-370kW, 450-650Nm (but capable of oh so much more) Expect to pay: From ,000 for a basic engine to ,000 for an 800+ HP monster.THe upper radiator supports you have to move them farther apart.Determine Optimum Airflow As a general rule of thumb, follow these minimum cubic feet per minute (cfm) ratings when using an electric fan as the primary cooling source on a basic engine: 1,250 cfm for a 4-cylinder.The fan clutch can be driven by a belt and pulley or directly by the engine when mounted on the engine's crankshaft.But the farther away the fan is from the radiator, the less effective it becomes.The fan clutch pulls air across the radiator and condenser to help remove heat.j33pman Registered Joined Jun 14, 2007 1,056 Posts #5 · Jan 8, 2009 that spacer looks to be way thicker than a stock one.from Fan Clutch Engagement Or Disengagement.On many vehicles, there may be two fans: A main cooling fan, for the radiator.This subject came up in the context of a swap I did to put a 1987 Mustang 5.A radiator is useless without airflow, a fan shroud helps direct air through the core. Does anyone have an electric fan and a clutch fan. is about 4 inches deep from the end of the motor to the furthest point on the front of the fan.The radiator is set back because I originally planned on using a GTO condenser as well.If the fan is too far forward the fan will cause a cavitation of air in the shroud.The fan clutch’s job is to control when the fan comes on and off.-run the engine at 2000rpm for 2 minutes.Twist the clutch on as far as possible.If the fan throws the screwdriver back at you, then the clutch is good.(more than 1 to 1-1/2 turns), the fan clutch is slipping too much and needs to be replaced.24/7, and you have to listen to the fan cutting or pulling air on the freeeeway, were as the clutch fan ingauges, and then unlcoks when the radiator is back at a normal temp again!!.The oil filled kind are like what I have, portable electric heated radiators filled with oil.At speed, I can drive through Hell and back.3 fan clutch adapter from BPD then source a 97 7.temperature of the air crossing the fan clutch face, which could cause .They are essentially the same unit with the exception that the V-6 fan fas a shroud to direct air flow through the radiator whereas your current fan has no shroud.75 k20 350/350/203, 14bff, dana 44, 63"/52" 39.40 mm) Clearance Between The Leading Edge Of The Fan To The First Obstacle Forward.Once you're under way at a reasonable speed, the car's forward.This can cause bearing damage, radiator damage if the blades flex too far, or even shatter a plastic fan.I go by the 'rules' that say the fan should be 3/4" to 1" from the radiator.Depending on the type of fan you select, the mounting procedure may vary slightly.It is a standard car and should have had a stamped steel blade, so I removed the clutch fan and it is availablecheap.An unshrouded fan is moving air through only the portion of the radiator equal to the surface area of the fan.When the engine is running, the coolant circulates from the engine and flows to the radiator, where heat is dissipated.Its get in general far to hot in my opinion.If you determine your fan clutch is faulty, replace it immediately.How important is it to have a shroud around my fan ? Very, one of the properties of air is that it likes to follow the path of least resistance.If the fan does not come on, further diagnosis of the fans electrical system will be necessary.Lastly if you made it this far, remember how the fan turned by hand when the truck was cold.as well, I hooked up my AE Softwear and I am able to run the Fan Clutch thru its duty cycle tests from 0-100% and it comes on and off as.Fire up the truck and let it idle for a few minutes without the A/C on.As part of the LS swap, I am using a 2005 GTO radiator and fan setup.But if you have to buy a new clutch fan and blades, then it's worth it to pay a little extra for the electric fan.If there is excessive air leakage around the radiator to shroud, you can place foam gasket material to button up the gap.An electric fan is preferred because when you need a fan the most (at idle or cruising speeds) an electric fan is delivering maximum air independent of engine RPMs.Don't let the vehicle overheat.You can test the electrical radiator fans by taking a wire from the car battery, unplug the radiator fan connector, and put 12v+ and ground into the connector.Believe that a minimum would be half an inch clearance to rad.The Black Magic fan is thermostatically controlled, it only comes on when the radiator hits X temp.The fan should be blowing hard.It sounds like your fan clutch works OK if it works with the blue wire mod.can go ean ileak hydraW,iQ fluid have factory shop aa involved test Fans which ihat ovetfieat engine by the test yce frie\ion the engine couple of engine is below its ating temp, Shut engine from speed while watching far:.You're correct, the pump will turn so as to keep the nut tight.Less with stop and go traffic, perhaps a bit more if you are at moderately high speeds, 40 to 45 mph, with no stops.I do like the clutch fans for 2 reasons, a flex fan robs H.I did not really say the fan needs to be 1/2" away from radiator, although that is a good rule of thumb when not running a shroud.This issue often comes into play when a.The viscous clutch ensures that the fan speed is automatically .; the core of the radiator is approximately 371 sq.There is no spacer used (but thanks anyways) As far as removing the radiator intake air ducting and bolting it directly to the core support like GM did for 1966 up Novas, and using a 66-67 plastic fan shroud, I agree that that would be the smart way to go to get as much clearance as necessary.by Daniel Stern (part 5 of a series) The fan moves air across the radiator (and A/C condenser, transmission fluid cooler, power steering fluid cooler… when the car's not moving fast enough for the natural airflow to cool it.Ensure the fan clutch is operating properly.The radiator blew yesterday ( tank split down the middle) So I put that in.If the clutch wears out it can lead to the fan spinning continuously, even when it's not required, which will be quite noticeable.Radiator core: This is the main, large block component at the center of the radiator.Try to bush this paper stick into the fan, and it should be able to stop the fan, as the clutch should not have locked yet.IIRC the Hayden fan clutch was 2.If these don't match, airflow can decrease.If you can sell the front AUX fan afterward, then you will be even compare to getting the mechanical fan.Having most of the fan OUT of the shroud allows that "radial" air somewhere to go.If your having heating issue some time the clutch fan can go bad (overheating at speeds is one of the issues) with the motor at running temp the fan should be firm to turn by hand and not to easy to spin when cold.If the engine is cold and you start it, when the air system pressure builds, the clutch should release and the fan should freewheel because the control valve allows air to the clutch which releases it.The clutch fails to engage no matter how hot the engine becomes.This is what I did: Before I turned off the engine, I checked the coolant's temperature one more time, with the scan tool, and it read around 200° F (which also indicated that the engine was not overheating yet).You need some space to allow for engine movement.I know that the engine moves, vibrates and rotates so mechanical fans needs much more room than electrical.Now stand next to the engine and listen to the fan.My understanding is that the belt driven fan is on a clutch which I assume means it doesnt start up until a defined temperature is reached.For example, on a '32 Ford, the area of a 15.When you start your car, it should take about five minutes for the clutch to engage, and you should hear this.Or the thermostat is starting to go out.To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature.Rick suggests that the condenser should not be mounted directly to the radiator, but should be at least 1/8-inch away from the radiator.That's with new aftermarket fan, hub, water pump, thermostat, flushing, three different brands of Hollywood radiators, tried everything.The distance from the clutch to the radiator is irrelevant.If the fan stops, the clutch is bad.• Standard Duty Thermal: Turns the fan 50-60% of shaft speed when engaged.Well it's on looks like I will have about 1/2" clutch clearance and 1.The fan clutch checks the temperature of air that is coming in contact with that of the radiator and works upon protecting the engine.I have not seen enough on cooling system mods as far as a entire cooling system upgrade.Any fluid leaking from the fan clutch is a sure sign of a broken clutch.You should never put plastic ties through the radiator because it could cause the radiator to leak.Discussion Starter · #5 · Aug 15, 2010.BMW dealer (RSA) run a diagnostic test and found fan to be faulty. How many CFM does a flex fan pull?. This is where the removal of heat takes place when air flows through the core as you drive, and with the help of the cooling fan.8l Engine Problems and Reliability.The fan speed should decrease as the engine RPM decreases and should increase as the engine RPM.When this happens, you need to make sure that the fan blade can still sit high enough in the fan shroud for proper air movement.I jumpered the power (red wire) to the low speed terminal (red/white) and got low speed fan operation.If the fan clutch is in its Engaged Mode, then the fan blades should not be able to complete one or two revolutions.A your thermostat contionously regulates the coolant flow to maintain around 89-91 degrees temp, any air temp rise above 67 degrees air temp or.The labor should cost you $70 to $130, while the parts can start at $75 and go up to nearly $300.If your having heating issue some time the clutch fan can go bad (overheating at speeds is one of the issues) with the motor at running temp the fan should be firm to turn by hand and not to easy to spin.The fan clutch can fail for a few reasons. How To Choose An Electric Radiator Fan. To get maximum airflow through your radiator core, you should use a fan shroud.You'll hear a loud fan noise from under the hood the entire.This part can sense radiator heat in order to trigger or turn off the cooling fan.If the coolant isn't flowing, one radiator hose will be much colder than the other one.When a fan clutch is used, it bolts directly to the water pump 4 bolt flange.The most so far it got was about 200 but I almost bet it might get You could try using a big box fan in front of the radiator while .Position fan half in and half out of shroud and the distance should not matter.The temperature-controlled clutch fan was also available as option K02 on the hydraulic-lifter engines for $15, but only 4712 1967-69 Camaros were ordered with this option.If there is no clutch, the fan would be difficult to turn because you would have to turn the fan and the pulley, which are turned by a belt.To Rear of Fan – Minimum of 1” (25.The fan shroud is the biggest problem, it's one piece, THANKS GM.Don't let the heat get your down.Regardless, the fan will ultimately mount back into the front flange of the water pump.The fan clutch has to be working if it is staying cool when parked, the fan should not matter at highway speeds, I'd also check to be sure all the air is bled out.When mounting electric fans, avoid the plastic mounts that go through the core; mounting the fan to the radiator side straps is a better choice.A new Asian fan clutch is definitely in the right direction,, As far as modifying the new Toyota part ,, I may try running it as is to gauge its cooling capacity to set a bench mark,, How’s the rest of the cooling system ? When I worked as a tech for the FJco in Miami Florida I had to work though a few 2fs that would run hot,, like real hot.Use this guide to help choose a ceiling fan.This improves power and fuel economy.Original chevelle clutch fan should be good to at least 6500rpm.I think that is just a little too close for comfort.Radiator surface area = 370 in.I shot each of the 8 fasteners with penetrating oil and let that sit for 15 minutes or so.Unfortunately it's not programmed to kick on full speed till it's in the 220* range.A stock non-clutch fan should be aprx.On a functional fan clutch, the fan blades will all be lined up neatly inside the housing, which should sit upright with an equal amount of space between the radiator and engine.radiator much of blade and angle is of speed.A bit more if it is cold outside, a bit less if it is 100F outside.Pull the clutch up and back through the fan onto the water pump pulley. my car's fan came to pieces. and when the clutch fan stops working as it should, the radiator and engine can overheat.Replace your cooling & radiator fans with our range of Dayco Fan Clutch - 115829 Tru Flow Radiator Clutch Fan - TFC180.Maybe that's why it sits so close.Too much damage equals a repair bill you don't ever want to see in your lifetime, which is why Kirk's Auto Care services and repairs cooling systems.I use 1/2-3/4" 2" is way too far unless you have a shroud.The fan is a clutchless aftermarket piece and already has a 2" spacer.Always wear gloves when handling the radiator as sharp fins can cause injury.The fan is designed to create negative pressure behind the radiator to pull air through.An electric fan assembly uses sensors to measure the systems temperature and send power to the electric motor that is attached to the fan moving air through the radiator.Engine is an HO with roller lifters and they do run a bit cooler.The fan clutch is a tricky repair if you are a novice.I just did the fan pulley bracket on my 1995 LS400.I replaced the electric radiator fan on my 2005 BMW X3 2. E36 Fan & Shroud Procedure. This allowed me to stand the radiator up by pushing the top of the radiator towards the front end.Always use the right shroud with your fan.Cooling, Heating, Ventilation & A/C - How far should the fan be from the radiator? - For maximum cooling effectiveness?.The two parts age at the same rate so if one has failed, the other is probably not far behind.X Research source Check to make sure each of the bolts holding the fan clutch in place is secure and intact.It may in fact, cycle as the temperature of the air thru the radiator changes depending on airflow.Not sure if a big block would be different from a small block.Pusher fans should be the same diameter or smaller than the air conditioning condenser.2) How long before you call a fan clutch defective? It roars after every start but then settles down.This allows the engine to operate more efficiently by removing the load that the fan places on it.There is an adjustment on the fan.If you’re moving it will be fine.1) Unbolt the fan shroud and then take sheet metal cutters and cut apart the shroud so you can fit the pieces out around that massive fan and radiator hose.As the fan clutch is a cooling system component, any issues with it can cause overheating and other issues.I now have almost 7" between the fan and radiator.Note: Fan shroud should insert fully and align with radiator frame.At high speed, the radiator slipstream should be strong enough to carry heat from the radiator.Here’s a list of the most common fan clutch noises and what each one could mean: 1.Needs 5 minutes of driving before low rpm driving sounds normal.A roaring noise could mean a number of things, including a bad wheel bearing, worn tires, or a differential that’s low on oil.I use the biggest cfm s blade fan flex a lite makes, when it's on there is there is def a vacuum cause its a push/pull fan but again if the radiator was the way it should beheating problem would NOT be a problem.Remove the lower radiator hose at the left side of the water pump.Silicone fluid leaking from the fan clutch would cause this problem.How long should a radiator last? A more powerful engine gives out more heat so it will need an upgraded radiator to handle the higher heat output effectively.NEVER use the radiator as a ground.Only 1/4 to 1/2 of the depth of your fan should be in the shroud.I also had my stock radiator converted to three cores.Ideally for maximum airflow you'd like to have the fan almost touching the radiator.Also if it Roars a lot it can be the clutch fan as well.I remove the fan after knocking the fan clutch loose.I just installed a summit aluminum radiator, seems the shroud will work with just minor clearance adjusting at the upper hose.How much does it cost to replace a radiator fan? The average radiator fan replacement cost is typically between $550 and $650.NOTE: It is recommended to replace your Radiator Fan Clutch & Water Pump at the same time.If not, you'll need a new clutch.If it doesn't it's junk, buy a new one or invest in an air clutch.Car is running a bit too cool with a 180 thermo so will go to 190.To get your fan in the correct position, use fan spacers or shims.Move the fan further away, and you'll get more out of.Thus, the CV fan clutch is engaged to ensure that sufficient air flows through the radiator.The oft-overlooked fan clutch doesn't get a ton of credit or attention, but it's an essential piece of the cooling equation in many vehicles.So it should line up correctly in the shroud with no trimming using the after-market replacement clutch.As far as performance, there is zero issue with the electric fan.you should be able to spin your fan if the motor is off if it is a clutch fan and on the e-fan you might experience problems if you have subs or anything else in your car that pulls from the battery but just the fan should be ok with your stock alternator (assuming it is stock) H.This is to keep the engine cool when not moving.Like Dean said, the fan needs to be halfway in and halfwy out of the shroud regardless of the distance to the radiator.The fan clutch or the hubb feels pretty good to me.The V01 HD radiator option did not affect the fan usage.More like 90% the speed of the water pump.Basically, the fan clutch is released by air pressure.He stated, "The 1/8-inch air gap will prevent direct contact heat transfer, and insure that the air flows through both the condenser and radiator.Available in 10, 12, 13, 14 or 16-inch sizes.By turning a knob, you can adjust when the fan turns on, from approximately 160 to 240 degrees.This will allow for any blade flexing, or motor movement while still getting good air pull through the radiator.Still spin but stop as soon as you let go.Is that a flex fan or are you just running without a fan clutch? I'm not a big fan of either method, personally.My fan clutch sits 1-5/8" away from the radiator and the fan blades are 2.D DoubleVision Not Considered a Senior Member Joined Oct 23, 2002 10,722 Posts #5 · May 5, 2010.Likely arrived at by how most OEM applications seem to use that minimum.Both fans should come on when the A/C is on.But in the real world you can't do so.Other Cooling System Problems Affecting Fan Clutch Operation Plugged radiator (inside or outside) can delay or eliminate fan clutch engagement Partially opened thermostat does not allow full coolant flow to the radiator Too much antifreeze concentration does not transfer heat as well as 50/500/0 mixture Symptoms of Fan Clutch Problems.Schedule your Fan Clutch Replacement today! Fan Clutch Replacement.This is the easiest part and only requires for you to take off 4 nuts.However, some vehicles can be more expensive, depending on the design.However, the fan's clutch never fully disengages—it keeps spinning at about 30 percent of the water pump speed at all times.As far as the 318 goes, I think you have an electric engine fan, so this mod would not apply to you.It provides airflow when needed.And of course, with a core, you can have the fan as far away as you need.When the engine is hot, rev the engine to 2,000 rpm or so.If you didn't have a shroud then that's a different story.Whatever spacer you are using, make sure there is a fan clutch at the end of the spacer.Converting to a Thermostatically Controlled Clutch Fan.After a minute or so, you should hear the fan kicking in, pulling more air through radiator and condenser.To get specific the fan clutch is responsible for determining the speed at which the cooling fan spins against the vehicle's radiator.The fan shroud kinda eliminates any need for getting the fan real close to the radiator.A bad fan clutch can leave you without an operational fan, which in turn prevents the proper amount of air to cross through your radiator core.The fan should not fight the water-thermostat in maintaining temp, and should only run for a few seconds after the car is turned off (unless the car is very hot).As we all know, the fan clutch should have been disengaged after about 3000 RPM, so it appears that this car was dyno'ed with a stuck fan clutch.This is to accommodate normal engine and radiator movement, and also the flex that occurs in the fan blades at higher engine rpm.The pics I've seen of the LB7 blade look to have the correct offset.Find the best fans for staying cool here.By my stock gauge then cools right down and unlocks.Both radiator fans should always run when the AC compressor is engaged.Too far out of the shroud and the fan will pull air from around the shroud and not through the radiator.Now when the temp gets to 220 like you say, shut off the truck and check how the fan turns.Shoot for about 1/2"-3/4" clearance from fan to radiator.Did they come on LS6's, if so didn't they also have a 6000rpm redline?.The fan clutch is an important part of the engine and A/C cooling systems.The 280zx fan clutch sits to far forward.Most fans should come on when the coolant reaches about 200 to 230 degrees.They are specifically designed for this action.I noticed that electric fans are completely inside the shroud and very near to radiator.The AC system depends upon being able to dissipate heat into the engine coolant.However, with just the heavy duty clutch and fan without spacer, seems to be alot of distance between the clutch and rad.Your vehicle's cooling system is crucial to its performance, and every time your engine overheats, you cause damage.Engine fans are bolted to the front flange of the water pump with long shaft bolts.For that reason, when the engine reaches higher temperature than standard level, the radiator fan will be switched on. How Does The Clutch Fan Work?. The fan should only spin for about 2 seconds after the engine is.Thermal fan clutch is the part that controls the radiator fan.This is one reason why information on when a radiator fan is suppose to start can be beneficial to vehicle owners.It gauges the temperature of the air coming into contact with the radiator and protects the engine.This can damage the fan shroud and the fan.The fan should turn on around 190 degrees or so in most cases as the thermostat is supposed to open around 177-183 degrees F.I've had mine off a few times and just snugged it up till the pump turns as you did and have never had an issue.The factory AC cars received a 7-blade clutch fan (dealer AC got the 5-blade fixed fan).These are typically 10 mm nuts and will require a 10 mm combination wrench.Repairs covered by 12-month/12,000-mile warranty.Remove the screws securing the top of the plastic fan shroud to the radiator.Add in the aluminum water pump.Push the clip into the radiator fan.Do a test drive to bring the engine to operating temperature (assuming the coolant should be over 180 degree when the thermostat opens to allow coolant flowing into radiator).I recently heard about the Hayden 2886 fan clutch.Anything less than about an inch you risk the fan flexing and chewing up.Worn mounts wont be helping either.It pulls the air through the radiator.I have been told that with a shroud, the fan can be 3/4" from the radiator.What is required to yank the oe system and replace it with a more modern fanless.Fan spins after engine shut-down might indicate a weak clutch.Usually a bad or failing fan clutch will produce a few.You want the fan to pull air through the core of the radiator, not around it, 1/2" space between the two gives you some safety room yet still lets the fan do its job if you decide.All shrouded fans should be on the engine side of the radiator.Any vibration or movement at all may put the clutch into .I'm not a big fan of either method, personally.Air conditioning (RPO C60) included the K02 clutch fan as part of the AC package.Nova_Power4 Registered Joined May 25, 2007.That's not to say Benz's baby It is a lot easier to find an older used Mercedes-Benz Sprinter van than a Ford Transit.A shroud makes these much more effective but most of the shrouds have moved the fan back from the core too far.The clutch, though small, plays a vital role in the functioning of your car.how far should fan clutch be from radiator.(Not always the radiator fin surface).With 440K miles on the clock and 30 years of northeast rust, longevity of the fan clutch isn't much of a concern.If you're not, then have someone do it for you.I think you are right, the fan distance to the radiator should be determined by the fan shroud.Beside above, are Flex a lite fans good?.The fan should come off with the bolts.When a diesel tractor runs out of fuel, it requires a little more work than just filling up the tank before it will start.We currently carry 7 Radiator Fan Clutch products to choose from for your 2002 Dodge Ram 1500, and our inventory prices range from as little as $58.If you're moving it will be fine.I just recently did a fan clutch conversion on my 2011 as it was overheating when pulling my 5th wheel camper, especially in the mountains.As the fan goes further away from the rad it starts pulling the air from the engine compartment rather then the cool air that you want pulling through the rad.Turn the pulley to twist it back into the clutch.**Power to pin 3 on the T4 connector to the FCM was chewed through.I don't intend to push it beyond 500K.It forces the air thru the radiator at the same volume and rate as long as the fan is inside the shroud.There are other things that should be done, depending on what part of the country you live in, due to climate and temperature (electric fan, different thermostat, etc), but the power gain is from removing the fan/clutch.If the fan clutch spins freely when the engine is cool down fan clutch might be bad.4 bolts attach the front of the fan clutch to the fan.Philip Administrator Joined Feb 23, 1999.2L Blazer (the one that came w/my 350 was trashed) and the wider diesel radiator, in the process of swapping to the normal width gas radiator (for clearance issues).It also reduces drag on the engine when not needed.Besides getting a shroud, what would be the best way to close this distance? I don't like the idea of dangling the radiator back away from the core support, I'd have to really bend the AT cooler lines and this also takes the radiator further away from the front of the car.Without a shroud a mechanical fan needs to be within 3/4" or so of the core to pull enough air, and going longer than 3" on the fan spacer will lead to problems.Learn where to shop for industrial fans.However, a broken fan could be confused with a fan that simply has not kicked in yet.These SPAL fans feature curved blades which are much quieter than straight bladed fans.Without a shroud, that's a waste of 143 square inches (38%) of the.This allows the engine to maintain appropriate operating temperatures, and reduces parasitic power draw from the fan running at full speed.I've been working on installing air conditioning in the Chevelle (Power Tour was HOT) and I've run into a snag with the condenser.Been running a 7 blade fan and clutch on this for 3 years, the hottest it has been is 200 ona 95 degree day in traffic.The vehicle’s speed forces air through the radiator.For some, however, electric cooling fans are not only keeping the engine cooler in traffic, but they keep the engine cool at stop lights, too.Just have the old clutch off and a tape measure and give me a call @ 734-479-4805. How to tell the radiator fan clutch, aka liquid coupling, is. Find here Radiator Fans & Fan Motor, Radiator Shroud, Fan Blade & Fan Clutch, Radiator Cooling Fan manufacturers, suppliers & exporters in India.The electric fan should be kicking in with the AC engaged and some time after when the engine has reached 190 - 207 deg.The stock fan clutch is a thermostatic type, meaning it engages more to blow more air when the air coming through the radiator is hot.Sometimes a customer will complain about a roaring noise coming from the engine bay.No mounting hardware is included.Also, with the fan and clutch that close to the radiator, you're seriously decreasing the efficiency of the radiator by only pulling air through the parts with a fan blade in front of it.How can you tell if a fan fuse is blown? Look at the fuse wire.This means the area of the radiator that is not covered by the fan is wasted.Cerberus, Jun 24, 2012 SHARE POST #13 tommy Member Emeritus from Davidsonville, Md.A properly maintained radiator should last at least 3 years, and up to 8-10 years.If the fan isn't working, check the temperature sensor and the fan relays.A fan clutch will look like part # D22175, just as an example.I just had to replace mine today.3) Take off the fan clutch assembly.We recommend 70% of the radiator core be covered.On top of low prices, Advance Auto Parts offers 2 different trusted brands of Radiator Fan Clutch products for the 2002 Dodge Ram 1500.I have 3/4" at the bottom of the fan to the radiator.You just won't notice it as much.This type of clutch fan was produced in order to save energy, lowering emissions, and reducing waste.On a 67-68 mustang, 302 and the bigblock radiator that comes in a Shelby, what is a safe distance between the radiator and the fan? I thought I had about a 1/4 inch between my flex fan and the radiator as a result of my Paxton install and during a transmission/clutch failure i put the fan into the radiator.Following this will always put you where you need to be If no shroud, .Then all the rubbers for the mounts you have to cut so they are wider.Little by little losing all of the space between the fan clutch and the radiator fins.A pusher fan is used when an engine swap reduces space for the fan between the engine and radiator.My oil filled owners manual says to keep all flammable materials .Then I removed 3 of the 4 bolts holding the fan to the clutch.When the air coming through the radiator is hot, the spring expands and opens an internal valve that reduces clutch slippage.) The radiator and shroud were the most frustrating thing Ive done on mine.A bound clutch is also a sign of problems.How far is the radiator from the fan? Mine is set back 10" and PO had removed the thermostat.The fan should move freely by hand when the vehicle is off.I have the following setup: - the fan is a 7 blade metal fan and I think its a clutch fan. clutch fan, how far away from radiator?. It has seven blades and was too far from the radiator for my car.I read this elsewhere, but find the water pumps and fan clutch parts seem identical for '72 - 83 Z and ZX.When using a mechanical fan there should be at least 1 inch from the blades to the core and the same from the tip of the blades to the shroud to accommodate for engine and radiator movement.If running a Shroud, The fan blades should be halfway in the shroud.The radiator is the problem but in my casemy radiator is close to $400! So for now I direct those funds elsewhere.Step-9: Install Fan Control Unit.However, I ended up ordering the Vintage Air surefit kit based on the price of new GTO parts.The fan clutch it's got a small amount of oil when the oil gets hot because of the engine running the fan clutch gets harder to turn to cool down the engine.Late 66 AC also got a unique 3-row radiator and unique fan shroud.HOW TO TEST RADIATOR FAN ON BMW MaxiCom Scanner: https://amzn.For me, changing the belts was done when the radiator was out.In most cases, it is mounted to the fan and on the water pump or any other belt-driven pulley.0L Being that i run an all-brass radiator wich mounts a little closer to the engin than the stock one, i ended up fairly close to the pulley bolts.This important part of the cooling system is used to pull air though the radiator when.If your car has an ideal running temp of around 89-91 degrees C (the thermostat opening point), then the fan clutch opening point should be at a temp slightly higher than this normal running temp.Fan clutch locks up when the air flowing thru the radiator reaches the clutches set point.Always run an anti-collapse spring in the lower radiator hose.It's often compared to a jet engine.Or the drive can be seized, which can be noisy as well as waste engine power because its turning when not required.The fan clutch should be disengaged with no voltage applied.Being half outside/half inside, the fan is a bit far away from the radiator.Strangely temperature gauge stays just above halfway mark.As it sits all put together I only have 1/8" of space between the fan clutch fins.Measure the resistance between ground and the (K161) Clutch Fan Supply circuit at the Radiator Clutch Fan.Then it was possible to remove the radiator.From fan clutch roaring to fan clutch noise, there are many signs you should be on the lookout for in this case. How far should my fan clutch be away from the radiator?. Is the resistance below 10k Ohms? Yes Replace the Powertrain Control Module (PCM) in accordance with the Service Information.The Fan Should not be roaring/fully engaged.As the coolant gets hot, fan noise should increase to a roar and the fan should spin a lot faster.A fan shroud ensures that air is moving through the radiator core and not around it.There are many myths regarding electric fans.How to Remove a Fan Clutch From a Water Pump.anyhow I used the new fan blade on my old clutch assembley, I have good clearance around inside of schroud.If the fan clutch operation is normal, when first starting the car, the fan clutch should “clutch up” and an increase in noise and airflow should be obvious.The hoses will have to be lubed up and then stretched over the radiator fittings (just like 1/8" larger).At that time you won't have any airflow over the radiator and that's not good.The fan shoutd or revolutions after the engine has stopped. How close is your fan to your radiator?. The general rule of thumb seems to be about one inch.There should be at least 1 inch of clearance between the two.Bolted to the water pump between the water pump pulley and flange the clutch fan turns at engine speed and is driven by the serpentine belt.A roaring noise could mean a number of things, including a bad wheel bearing, worn tires, or a differential that's low on oil.With the air tanks empty, the clutch should be locked.At that time you won’t have any airflow over the radiator and that’s not good.This is how the factory does it, with the fan in the correct position at the shroud lip the air can escape off the blade tips pulling more air through the core, if the fan is too far into the.It's just an old fan clutch, that has gotten dirty and makes noise.Discussion Starter · #1 · Jul 15, 2004.#2 · Jul 2, 2015 The distance from the clutch to the radiator is irrelevant.Care should be taken to ensure the correct fan clutch is installed on the .The Mark VIII fan will work however you wire it (I suppose this could be true for the black magic fan too).The fan engine is close (about 5/16 i guess, i didn't measure, could be.There are two main types of mechanical fans: clutch fans and flex fans.Folks think of an automotive fan throwing air axially, but in fact there's an amazing amount of air thrown off radially by the fan.Radiator fans: mechanical and electric car cooling.But the clutch fan is far better than if you were to get a clutchless mechanically driven fan, but when you really give it yhe beans and need that extra power, you still lose almost as much when it gets to "fullish lockout".the air thru the radiator changes depending on airflow.One belief is the faster a fan turns, the better — which is not completely true.A larger radiator, a larger clutch-fan, and a shroud would probably keep your engine cool; mechanical fans can sometimes work better than electric fans.Loosen the large nut on the front of the water pump by turning it counterclockwise with a wrench.To front of fan: 1" minimum from the leading edge of the fan to the radiator core or closest obstruction.In many cases, the blade and shroud are designed to match the middle/center of the blade with the bottom of the fan shroud (cowling).How far can you drive without a radiator fan? No more than a mile or two.New fan still does not kick in when coolant temperature rises to half way mark on gauge.Turn the large nut between the fan and the water pump ccw to remove the fan assembly.With a shroud you force the air to be drawn through the radiator instead of around it.Looks at other stock set ups in your area.It's actually made up of thin pipes or tubes surrounded by thin, cooling fins.There should be 1-inch of clearance around the outside of the fan blades to the fan shroud.To start, loosen these long bolts and remove them from the fan.The fan disengages when: The engine is cool.1/2 in, 1/2 out is the MAXIMUM distance into the shroud that is acceptable.If the clutch is still working fine, I wouldn't bother with replacing it.Just so, does radiator fan affect AC? Yes, a broken radiator fan can cause the air conditiong to stop working.Fan had blown the coolant all over so hard to find origin of leak but assumed it was at the face of the engine block somewhere.· Clean the external housing of the fuel filter.A puller fan sits between the radiator and the engine.It's crazy hot around here in the summer, so a quality-long lasting fan clutch is a must.Check for Radiator Support Rods and Other Potential Contact Points.Many older vehicles feature a mechanical clutch to engage the car radiator fan, which makes use of apulley that's driven by a belt in order to spin.All these numbers were generated using a.At any temp but usually in warm/hot weather or after sitting from full temp running but now cool, I can sometimes hear a loud (almost like a starter motor gear trying to start a running engine) type of sound while getting up to speed.It should turn with much more resistance.Click to see full answer Similarly, do you really need a fan shroud?.Without the fan working, the engine.I believe the fan should be 1/2 in, 1/2 out of the opening of the shroud.If the fan does not come on, something in the control circuit is defective.The fan clutch and water pump are also connected by the same shaft.History Of The Radiator Fan The first clutch radiator fan was developed in the 1960s, and was put in cars by the early half of the 1970s.I did a 302 Ford swap into an '83 Mitsubishi pickup and moved the radiator forward 2 3/4" so that I could use all the Ford factory fan, fan clutch and radiator.With this setup, I have been told you don't need a shroud and this is how GM did some of the eary cars.So far as fan reliability, usually a water pump does not outright fail but rather the bearing wears down till coolant weeps out so you have low coolant, and yet a mechanical fan is subject to the belt breaking or the bearing shot or the clutch shot.These bolts tie the fan clutch to the fan, the water pulley, and the water pump.Removed the fan blade today so I could work on other parts.It also has hookups for A/C and a manual switch if you want to use them.The fan clutch will spin loosely until the temperature reaches a certain level, at which point the fan clutch will fully engage so that the fan can work at maximum efficiency.Clutch fans are controlled by a thermostat and utilize a clutch to engage or disengage the fan at a specified engine speed or temperature.Electrolysis can result and it can corrode your radiator, creating leaks (usually at the most inopportune time!) A commonly held thought is that the fan blades on a belt driven mechanical fan should recess 50% into the shroud for optimum cooling.Also should improve idle a/c temps.Preferrably the shroud would have no square corners to trap hot air, although my A coupe 327 W/ a full hood barely gets to 180 degrees W/ the AC on using a home built square.It turns out that different jeep radiators have different offsets (how far forward the radiator sits in the grill area).After this comes the roar of the fan, designed to give you an enjoyable driving experience.Have an assistant turn the engine off while observing the fan.** My 2003 jetta TDI radiator fans are not working under normal operation so I checked the fan switch.Temp would hover around 100 on hot days, and that's without towing.Basic testing for any relay here.After about 60-90 seconds, the fan will un-clutch and the noise and airflow will drop.Mar 20, 2020 · The good news is that by checking your oil level, you should be able to notice if there's a problem with the filler cap. Understanding Fan Clutches. It helps your cooling system operate effectively and your engine operate efficiently.air should be pulled through the radiator towards the engine if the fan is mounted on the engine side of the radiator.If you have clutch fan the clutch could be bad.How far should I put my fan into the shroud opening ?.I am having some radiator work done so I am thinking of replacing the fan clutch if it is bad.A good working stock clutch fan is FAR SUPERIOR to any other type of aftermarket fan you could blow cash on.0L engine with EFI and a serpentine belt drive into a 1979 F100.I think the fan being half in/ half out of the shroud is about ideal. clutch fan too far away from radiator???. Unfortunately it is 3" total front to base.You will need to decide for yourself if your fan clutch is best or if an electric fan is best. Radiator Cooling : Griffinrad.