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Cooling fan will not turn off

Cooling fan runs continuously. it never turns off.

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  • Cars & Trucks Master
  • 1,702 Answers

Hi, I believe it is a bad thermal sensor switch on cooling system.
Replace it and you are good to go.

Posted on Apr 14, 2014

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

michigan man
  • 3533 Answers

SOURCE: engine cooling fan will not turn off

you need to look under the hood and to make sure someone did not wire the fan direct to your ingnition switch because they did not wanted to replace the fan because the relay was bad in the fan.

Posted on Feb 12, 2009

yotaguy
  • 232 Answers

SOURCE: The electric radiator cooling fan will not turn off

As long as the fan eventually shuts off this isn't a problem,the fan will continue to run for a bit after the car is turned off,once it reaches a set temprature it will turn off.

Posted on May 02, 2009

ronaldo_ross
  • 1056 Answers

SOURCE: Fan continues to run after car is turned off

The relay that controls the fan may have been stucked close. Pull out that relay, the fan should stop. Then examine the relay. Put 12volt to it, it should click, then click again when power is removed. If relays is okay final check is the temperature sensor associated with the cooling fan. Make sure it is not shorted. The resistance should varry with temperature. Use an ohmmeter, and dip it in hot water. Resistence should get lower as you dip in hot water. vice versa. Do the relay check first before doing all these CTS(coolant temperature sensor) check.

Posted on Jun 30, 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

SOURCE: Cooling fan continues to run too long with engine off.

The thermostat switch need to be check and change.

Posted on Feb 02, 2010

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Please rate my info.

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