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Radiator fans not working

Neither fan turn on. will over heat if left running and not driving

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  • 373 Answers

Check all fuses first. What kind of car? make , model, year?

Posted on Jan 08, 2013

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: RADIATOR FAN

If you've got the hydraulic fan, check to see that the solenoid at the power steering pump is plugged in. My 1993 3.0 had this happpen, and that's what was wrong. You have to pull the front passenger side wheel off to access the pump. Just stick your hand up in there and feel around. You'll find it. One way to check is to let the car idle and turn the a/c on full blast. You should hear the fan start to roar after a few seconds. If it doesn't, then check the solenoid wire. Worked for me!

Posted on Sep 14, 2008

  • 2 Answers

SOURCE: runs hot replaced radiator fan motor and heat sensor, fan still won't run

I own a 1997 caravan and had the same problem, turns out there is a fan relay switch mounted on the inside of the drivers side frame rail under the battery tray.. cost me 80.00 hope this helps..

Posted on May 15, 2009

  • 104 Answers

SOURCE: 2003 Mazda Protege5. Cooling fan on radiator is

First, check the relay for the cooling fans. Not sure about Mazdas but Fords have two coolant temperature sensors. One for the gauge or light on the dash and one for the fan relay. Check and make sure the sensor hasn't went bad or come unplugged. If these don't fix it the fan itself may be bad.

Posted on Sep 11, 2009

  • 1509 Answers

SOURCE: Both radiator cooling fans won't turn on vehicle overheats

The fans come on only when hot or the AC is on. There are many fuses that have to be good for it to work. The fan relay should have 2 pins hot with the key on, The other 2 should be ground. with the key off one should be hot and the other can then be ground the other pins that are ground one of them is the fan. the other becomes ground when the computer turns the fans on. If you don't have a pin thats hot at the relay all the time then theres a blown fuse or even the power wire from the battery at the battery

Posted on Nov 02, 2009

Molson02536
  • 3854 Answers

SOURCE: Both radiator fans on my 2002 Toyota Solara V6 run constantly

Check to see if the radiator fan relay has gone bad and needs to be replaced. Once you located the relay, (in the fuse box under the hood) Try swapping it out with another relay and see if the fans stop, if the fans stop working with the swapped relay, replace the relay. It's know for the relays when they go bad to stick and will have a close loop. Good luck and hope this helps. Keep me posted, be glad to help you get your car running 100% again soon.

Posted on Nov 03, 2009

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2 Answers

Why does radiator fan work when air is on but not when heater is on?


Have you waited long enough?
Sometimes it can take 5 -10 minutes before it turns on while using heater.

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2000 Nissan Maxima Overheating


Hi. Your radiator fan motor may be seized. Should ingage between 95-100 degrees when you parked on idle after achieving full working temp. If it doesn't, check fuse first and than relay responsible for cooling fan( you can find cavity in your owner manual. Let me know. The reason you car is ok while driving is the air going thru your radiator. When you stoped or parked for longer time with no speed there is nothing to cool your radiator. Fix it asap or eventually will cause engine over hit and seize.

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2002 Mini Cooper overheating when idling with the airconditioning on. Initially the air is cold and as the car engine temperature heats up the air conditioning gets warmer. Also, the radiator overflow cap...


Most cars have an 2 electric fans on the radiator. One will run when the coolant gets hot and the other will run when there is more cooling demand OR it will run when the AC is turned on. My guess is, the second fan is not running when your AC is. Your AC system creates heat of its own. The heat is removed through the condenser (radiator-like coil) which is usually located in front of your engine radiator. Without a fan the heat is transferred into your engine radiator causing it to over heat. This would explain why it overheats while idlling and not while driving. While driving, air is flowing through the radiator and condenser. to provide the necessary cooling. In short, check to see if both fans are running when the engine is hot and the AC is turned on.

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1 Answer

Over heating


If your vehical is over heating at idea it is most likely the radiator fan
this can be checked by running the car until it heats up and looking at the fan to see if it is running.
This usually isn't an issue as long as you are driving, but when you stop or driving slow or in traffic it will start heating up quickly. your fan keeps air flow going through the engine while at a stop to help cool down the engine compartment and pull.push air through the radiator

If you still over heat no matter if your driving or stopped it may be a thermostatic radiator valve that went bad. this is a release valve between the radiator and the engine that helps control the coolent flow between the engine and radiator and control how much heat is taken out of the engine to be cooled in the radiator.

So, run the car and see if the radiator fan kicks on. if it does, it's probably not a bad fan. if your car starts over heating and the fan never comes on it's most likely some problem with the fan

if it is turning and you are still having problems overheating go buy a new valve and change it out. cost you at most 5 bucks for a new one (probably less)

Jul 02, 2011 | 2001 Kia Rio

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Why does the engine fan NOT turn off on my 2002 Jaguar S Type 4.0 liter? It runs for several minutes after turning the car off and will come on while driving. I just replaced the sensor and it is still...


It would not be abnormal, so long as the fan does not come on when you switch on from cold. The fan's job is to draw air through the radiator to cool the contained liquid to a suitable working temperature. The fans sensor is activated by the temperature of the coolant. If this is a problem which worries you, try driving as gently and slowly as possible for the last mile or two of your journey. If things are normal the fan should not run on switch-off as that 'trick' will have allowed the coolant to get below the fan-kick-in temperature before you stop the engine. If your vehicle has a temperature gauge use the rteading as an indication.

http://wiki.answers.com/Q/Should_the_radiator_fan_run_after_the_engine_is_turned_off

May 09, 2011 | 2002 Jaguar S-Type

1 Answer

Car keeps over heating???


there is a fan switch to turn on the coolant fan

Jul 25, 2010 | 1994 Honda Accord

3 Answers

I have 2003 grand cherokee with 140000 miles that overheats at idle. as soon as i start moving again, the temp goes back to normal.


You have two fan's on your truck, 1 is a fan clutch runs with the drive belt, 2 elec fan motor, with test light and engine running at normal temp, just a little bit above 1/2 way on your temp gauge check voltage at elec. cooling fan harness if you have voltage at one of the two wire's and fan don't turn on, bad cooling fan motor, on the fan clutch after you check voltage at elec. fan motor turn engine off, with your hand spin drive belt fan if it spin's freely bad fan clutch, replace it.Also check cooling level.Hope this was very helpful

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Over heating leading to resevior geting full of hot , no fans


CHECK YOUR FAN RELAY WHEN YOU STOP AFTER A DRIVE THE FAN SHOULD COME ON AUTOMATICALL TO COOL DOWN THE ENGINE ;;YOUR RELAY MAY BE BAD

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1996 Grand Voyager 3.3L Over Heats


Dodge Caravan is notorious for failure of the electronic cooling fan control module (AKA cooling fan relay). This is not a "relay", it is a solid-state control unit, but many people call it a relay anyway.
It is mounted on the inside of the left frame rail just behind the radiator. You have to look up from UNDER the vehicle to see it. It looks like the picture below. The picture shown is very close to actual size.


12_4_2011_10_30_47_pm.jpg

May 10, 2009 | 1996 Plymouth Grand Voyager

1 Answer

Runs hot replaced radiator fan motor and heat sensor, fan still won't run


I own a 1997 caravan and had the same problem, turns out there is a fan relay switch mounted on the inside of the drivers side frame rail under the battery tray.. cost me 80.00 hope this helps..

Apr 21, 2009 | 1992 Dodge Caravan

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