Question about 2002 Pontiac Sunfire
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Posted on Jan 02, 2017
SOURCE: Radiator Fan's Run All The Time
There are 2 things that will cause this to happen. 1. The thermostat needs to be replaced and, 2. The coolant sensor can be bad. When I had this problem, I changed them both at the same time, she been just fine since then. Also, I had the check engine light on, and got the code from AutoZone (it's free!)
Posted on Apr 15, 2009
You may have a problem with the engine temp sensor or the wiring.
The fan would come on if the computer lost the signal from the sensor rather than the sensor failing because of the fan.
Low coolant is another possible cause.
Posted on Aug 16, 2012
If you are not the first owner it may be wired to the ignition, Previous owner may not have been able to get it to come on?
Posted on Aug 31, 2012
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