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Overheating due to fans not turning on

Tiny
KANGEL
  • MEMBER
  • 1999 OLDSMOBILE AURORA
  • 4.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 244,000 MILES
My car keeps overheating due to fans not coming on at all. I need to know if that is normal or if my relays are bad. I know there are three under the hood right next to eacheck other but I don't know which one to change.
Sunday, June 23rd, 2019 AT 5:32 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

It may or may not be a relay. Testing needs to be done to be sure you have available voltage for the fans to work.

https://www.2carpros.com/articles/how-an-electric-cooling-fan-works

I attached a wire diagram for you to view. Check the fuses with a test light to be sure there is voltage on both sides.

https://www.2carpros.com/articles/how-a-car-fuse-works

Roy
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Sunday, June 23rd, 2019 AT 5:41 AM

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