When I turn on the AC my car over heats

Tiny
SHICKSGILLI
  • MEMBER
  • 2004 CHEVROLET CAVALIER
  • 80,000 MILES
When I turn on my ac in my car it over heats I looked under the hood today and noticed that the fan is not turning on.
Sunday, September 18th, 2011 AT 8:18 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
When the fan should be running, check for voltage and ground at the fan connector. Blue wire is voltage, black is ground. You can use jumpers wires for voltage and ground to the motor connector, just to see if the fan motor itself will run? You probably should use an inline fuse just in case.

Note wiring below. If you unplug the cts will the fan run, with key on?
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Thursday, July 8th, 2021 AT 10:45 AM

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