my cooling fan does not go on when car gets hot changed coolent temp senser and relay fuses ar good
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1997 Pontiac Sunfire
Question: cooling fan
Answer #1Bret Bodas from RepairPal Test Shop, February 27, 2009, 09:48Master
You'll have to check the fan motor, it may have failed. You can try jumping power and ground to the motor and see if it works, just be careful! Also check to see if the motor is getting a power and ground signal to turn on.
Replybigmike, February 27, 2009, 11:13Rookie
motor works jumped it and if i disconect temp sensor wile car is running fan gose on ?
ReplyBret Bodas, February 27, 2009, 11:20Master
It is normal for the fan to come on when the sensor is disconnected. If the control module doesn't know what the engine temperature is, it makes the safe assumption that the engine is hot, so it won't over heat.
Is your engine overheating or running too hot?
Replybigmike, February 27, 2009, 11:27Rookie
just did valve job do to over heating and blowing headgasket hole in radiater runs cool till i get in some trafic
ReplyBret Bodas, February 27, 2009, 15:29Master
Sounds like you're saying the engine overheated, blew the headgasket and the radiator, and had a valve job performed too? Now it is running too hot when stopped in traffic?
Is the gauge reading normal when driving? Is it overheating now or just running hotter than normal?
Replybigmike, February 27, 2009, 21:43Rookie
runs cool when moving,in trafic it get almost to yellow/red then i run heater to drop temp a bit only in heavy trafic