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My heat is on high my temperature gauge goes over to the hot section?

Tiny
TAIRON
  • MEMBER
  • 2001 CHEVROLET CAVALIER
  • 2.4L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 160,660 MILES
While sitting at lights are when my heat is on high my temperature gauge goes over to the hot section, but while I am driving it stays it stays normal. What may be the problem?
Thursday, October 16th, 2014 AT 6:32 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
It sounds like the cooling fan are not working because of a relay or the fan motor is burned out. Here two guides to help us see what going on and get the problem fixed:

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

and

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

Here are the relay and fuse locations. Check the fuses first.

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

Check out the diagrams (below).

Please let us know what you find.

Cheers

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