The cooling fan runs all the time?

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

1 Reply

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.

Images (Click to make bigger)