The cooling fan runs all the time?

Tiny
JOSEPH 1984
  • MEMBER
  • 2001 SATURN SL2
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 85,000 MILES
The cooling fan runs all the time from the time you start the engine until you turn it off. When I first bought the car the fan didn't run but the heater and stereo didn't work now while installing the stereo I found the constant hot under dash and it appeared to be missing a wire that had been connected befor and the was a loose red wire hanging si I hooked it up and heater started to work but fan came on as well. So i'm pretty sure that the wiring for the fan motor isn't correct or something of that nature but i'm not sure what it should look like under there so I don't know can you please help me with a wiring diagram or somthing hell even a picture would work
Friday, February 12th, 2010 AT 9:02 AM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

Check the fan relay and make sure it is not shorted and providing power to the fan constantly.
Check the relay for any corrosion or burnet pin.

Here is how to test the relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

For your safety it is a good idea to disconnect the negative battery cable.

I have attached the fan wiring diagram for your reference.

Please let me know of any questions.

Thank you.
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Sunday, August 8th, 2021 AT 11:41 AM

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