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Cooling fans don't work at all - 2002 Audi A4

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My aircon on my audi a4 tdi sport is not working. How do i boost the aircon unit

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That is because your fan relays have burned out and need to be replaced. do not I repeat do not drive your car until you fix this problem because your engine will overheat and you will crack your engine block and it will seize on you. Most like you have a 2 speed fan which is ahigh speed and a low speed.

Posted on Jul 26, 2009

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Car gets hot pretty quick and will overheat, noticed fans arent coming on when car is hot or if I turn a/c on. Have caught them running recently but didnt catch it again.


it could be the cooling fan relays or possibly the cooling fans. to check the fans disconnect the plug at the fans and run jumper wires to them both power and ground. if they don`t work then the fans are bad. check voltage and grounds at the plugs when they should be running, if they are good then the wiring is good. it could also be the coolant sensor for the fans that send the signal from the sensor to the computer so it knows when to turn on the fans. the fan that runs with the A/C when turned on could be the A/C relay.

Sep 10, 2015 | 2003 Dodge Intrepid

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I have a 89 firebird cooling fan don't come on I'm


have you check to make sure the cooling fan is working and not seized. this is a common problem with most cars. this is where I would start then go to the relay. the relay is usually mounted on the firewall under the hood and there is a plastic cover that covers a row of relays. don`t remember which one is for the cooling fan though, they may be marked on the underside of the cover.

Oct 11, 2014 | 1989 Pontiac Firebird

1 Answer

Cool fan don't work


Battery might have not sufficient power to make cooling fan work. Check with the battery.

Oct 27, 2012 | 1998 Chevrolet Malibu

1 Answer

Fans not working/Overheating


Probably the temperature sending unit...if not that the relays...they should be relatively cheap and easy to replace...

Mar 31, 2017 | 1989 Toyota Camry

1 Answer

Radiator fans not working car is running hot.


Turn vehicle off. Allow to cool. Raise hood.
Try to see if the fans spin freely by hand. If not, replace. If they do spin, proceed to next step.
Next step-
Check coolant level, add if needed. Remember-radiator must be cool before opening cap. Make sure radiator cap is secure and tight if coolant was added.
Start vehicle. Observe coolant gauge as vehicle warms. Fans should come on when temp gauge reads halfway between c and h.
If fans do not come on see if they come on when you turn on ac or heat. If doing this makes them come on, suspect faulty cooling fan sensor switch. If they don't come on replace cooling fan sensor switch and fan relay.

Aug 30, 2011 | 1989 Nissan Maxima

1 Answer

Engine cooling fans don't come on


COOLING FANS DONT TURN COULD BE FAULTY FAN RELAY.FAULTY PCM AND FAULTY COOLANT TEMPERATURE SENSOR.CODE SCAN FOR FAULTY PCM CODE AND A FAULTY COOLANT TEMPERATURE SENSOR.SEE IF ENGINE COOLANT TEMPERATURE SENSOR IS GIVING CORRECT COOLANT TEMPERATURE USING A CODE SCANNER.IF ENGINE IS 190 DEGREES AND THE ENGINE COOLANT TEMPERATURE SENSOR READING 100 TO 80 DEGREES COOLANT SENSOR IS BAD.HOT WIRE COOLING FAN TO SEE IF FAN MOTOR WORKS.BECAUSE COOLING FAN MOTOR COULD HAVE OPEN CIRCUIT CAUSING ELECTRIC MOTOR NOT TO TURN ON.

May 13, 2011 | 2003 Dodge Stratus

1 Answer

Which fuse goes to the cooling fan


there is fuse and a relay for the cooling fan.just turn ignition on and test all the fuses(some fuses will only work with the system on like headlights/tail lights).check the relay in the relay box(panel)under the hood.you may have a bad cooling fan,you don`t say why your checking the fuse.if you unplug the connector at the cooling fan and jumper a ground wire and power wire it should work.if not then you need a cooling fan motor or assembly.

Mar 22, 2011 | 1987 Pontiac Firebird

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Overheats if left idling but not if driving...cooling fans aren't coming on...what couls be wrong?


the cooling fans on your car are comanded on by the engine control module which reads engine temperature from the temperature sensor . when comanded on the engine control module sends a signal to the cooling fan relays . which in turn runs the current to the cooling fans . So you might want to check the cooling fan relays and make sure the fues for the cooling fans are good and the relays .if the cooling fan fuses and relays are good it could be a problem with the fan motors or the engine control module not reading the right temperature in that case it could mean you have a problem with the temperature sensor

Mar 04, 2011 | 1998 Cadillac DeVille

1 Answer

How do i stop my car from overheating?


it can be several reasons for your overheating we`ll start with the basics as you don`t say what you have tried yet.it could be the thermostat stuck shut which will require replacement,it could be that your cooling system is low very low on coolant and that there is a leak in the system,either the radiator,water pump, frost plug,or a head gasket is bad and causing the overheating,the cooling system will need to pressure tested and checked for leaks and damaged components replaced and the thermostat should be changed at the same time,it can also be a bad temperature sensor, also the cooling fan or fans may not be working either by a bad connection or a bad cooling fan motor,this can be checked by hooking up a tool that communicates with the on board computer and the cooling fans can be commanded to operate,if they don`t then while they are commanded you can tap on the cooling fans to see if they will start to work or if they are seized or you can hook up two jumper wires one ground and one positive and directly feed the motor from the battery to see if it will start working.and you thought fixing cars were easy,lol

Mar 02, 2011 | 2001 Chevrolet Malibu

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