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Fan doesn't kick on

Tiny
JAKESCAMARO
  • MEMBER
  • 1992 CHEVROLET CAMARO
  • V8
  • AUTOMATIC
  • 150,000 MILES
It reaches 240+ and the fan will not kick on. It only runs when the A/C is on.
Thursday, March 17th, 2011 AT 10:11 PM

2 Replies

Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Replace the coolant sensor
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Thursday, March 17th, 2011 AT 11:27 PM
Tiny
DWB812
  • MECHANIC
  • 108 POSTS
The coolant temp. Sensor in the radiator is the culprit. It operates the fan when the temo gets to 200 dgrees F and shuts off at around 160-180. You should be able to locate it by tracing the wiring from the fan to the radiator. The reason it runs when the A/C is on is because it creates a load on the engine and they put a secondary sensor that runs the fan while the A/C is on. Make sure it's the one inthe radiator you replace.
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Saturday, March 26th, 2011 AT 3:28 AM

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