Question about 1986 Porsche 944

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Cooling fans won't shutoff

Radiator cooling fans won't shut off even after the engine has been off for several hours. Pull the relay and they will stop but not when you pull the individual fuses

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If With the Ignition OFF they are On and You remove the Relay and They Turn OFF Sounds as if the Cooling Fan RELAY is STUCK ON Replace The Relay is What I would Advise

Posted on Feb 12, 2009

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1989 buick century custom radiator fan won't shut off when car is off


radiator fan won't shut off when car is off JoAnn, look in your manual for the cooling fan relay and change it, this is the problem in a lot of circumstances when cooling fan will not shut off(faulty relay). Check the attached links,instruction and guides, Good luck
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Thread Radiator Fan Won Stop
Symptoms of Bad or Failing Cooling Fan Relay

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Why does my fan keep running in my 2003 Volvo S 60 after the car is off?


It can be faulty fan relay.The relay is not turning the system off.Or its wire short issue.Even with ignition off ,the fan relay is getting power so its not letting the fan to turn off.Bypass the fan control relay and see if still the fan works with ignition off or not.

For more troubleshooting check the link below:------

Cooling Fan Stays ON with Ignition Off?

http://whatisbyme.blogspot.in/2012/07/cooling-fan-stays-on-with-ignition-off.html
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Cooling fan relays location ?

http://technoanswers.blogspot.in/2012/02/cooling-fan-relays-location-on-1998.html
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DIC says "COOLING FAN FAULT"?

http://schematicsdiagram.blogspot.com/2011/12/dic-says-cooling-fan-fault.html
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Heater fan and headlights will not turn off with ignition off?


http://technoanswers.blogspot.com/2012/01/heater-fan-and-headlights-will-not-turn.html


-----------

Fuel pump relay and cooling fan relay troubleshooting ?

http://repairhelpcenter.blogspot.com/2011/10/fuel-pump-relay-and-cooling-fan-relay.html

-------------

Where Is Radiator Fan relay and Fuse Located?

http://schematicsdiagram.blogspot.com/2011/12/where-is-radiator-fan-relay-and-fuse.html

------------
These will help.
Thanks.

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Hey chandralebea,

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Assuming that you are speaking of the fan on the passenger side, because the other fan on some GM vehicles WILL run even with the key off. This is normal. The system is just cooling itself off. If the engine temperature sensor is reading high it might cause the fan to ran also.

Could be the relay for the A/C fan is "stuck". It may be in one of the power distribution boxes under the hood. Once located, swap it with relay for the other fan, and see if problem moves to that fan. If it does, replace the relay. Hope this helps. Let me know what you find.

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More than likely your cooling fan relay is stuck in the closed position, under the hood there should be a box with several relays, on the inside cover it will have a diagram, pull out the relay for the cooling fan and it should shut off. good-luck ! here is a picture of a 97 relay, but they should all be the same.
353638radiator_fan_relay.jpg

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Cooling fan won't shut off


Hi!
Check the cooling fan Relay located on the engine compartment Fuse n Relay Box, it is probably stuck ON. If fan stops when relay is removed, replace relay.
Note: Some vehicles are equipped with automatic cooling fans where the cooling fan can come on when engine is hot, even if the key is OFF or not in the Ignition, check your owners manual.
Good Luck! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.

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