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Cooling fan

Tiny
ALBACORE00
  • MEMBER
  • 1998 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • MANUAL
  • 19,000 MILES
According to the manual the cooling fan should come on if the engine heats up to 3/4 on the temp gauge. We replaced the relay last year and it worked for 6 months then stopped. The car was equipped with ac which doesn't work but if you switched on the ac button the dash the fan would run to cool the radiators. I put in a new radiator 2 weeks ago and the car runs cool until I have to stop and idle. She does cool down again eventually but I'm concerned about the stress on the head gasket. Is there a short?
Thanks,
Pete
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Monday, June 28th, 2010 AT 3:07 PM

9 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
It sounds like you have a cooling fan that is going out pulling too many amps which takes the relay out I would replace the both motor and relay #8 here are are guides to help you get the job done and the location of the relay below.

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

and

https://www.2carpros.com/articles/replace-electric-fan-motor

Check out the diagrams (Below). Please let us know what happens.

Cheers
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Monday, June 28th, 2010 AT 4:10 PM
Tiny
ALBACORE00
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  • 5 POSTS
No the fan does not come on at all. Would it still be the coolant temp sensor?
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Monday, June 28th, 2010 AT 5:04 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So does your a/c clutch engage at all when you turn on the a/c?
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Monday, June 28th, 2010 AT 5:22 PM
Tiny
ALBACORE00
  • MEMBER
  • 5 POSTS
No the ac clutch does not come on.
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Monday, June 28th, 2010 AT 7:05 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Ok here's what i want you to do i want you to lets check the freon level in the car here is a guide.

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

Please run down this guide and report back

Cheers
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Monday, June 28th, 2010 AT 8:31 PM
Tiny
ALBACORE00
  • MEMBER
  • 5 POSTS
Thanks,
I got the schematics. When you say jump the terminals do you mean the battery or where I unplug the sensor?
I'm being extremely literal here. Also my ac does not function at all.
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Tuesday, June 29th, 2010 AT 11:36 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
I mean with the a/c on the car idling connector disconnected jump across the two terminal's of the a/c pressure switch connector that goes to the switch for a few second's does the fan come on?
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Tuesday, June 29th, 2010 AT 2:42 PM
Tiny
ALBACORE00
  • MEMBER
  • 5 POSTS
If filled the system and replaced the fan motor and relay everything works good now thanks for your help.
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Tuesday, June 29th, 2010 AT 3:14 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Nice work, we are here to help, please use 2CarPros anytime.

Cheers
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Wednesday, June 30th, 2010 AT 12:38 AM

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