My coolant fan won't turn on in 2008 chevy cobalt
Asked by Noon513 Jul 21, 2017 at 06:38 PM about the 2008 Chevrolet Cobalt Sport Sedan FWD
Question type: Maintenance & Repair
I put a brand new fan in my 2008 cobalt 2.4 and it
won't turn on ... I changed both relays ( labeled
cooling fan 1 and 2)that are in my fuse box under
their hood all of the fuses are good I don't know
what else to check for or where to look....
4 Answers
firebird338 answered 7 years ago
Need to change the coolent temperature sensor mounted in engine block or cylinder head. Do not know where it is located on your vehicle but can check with your nearest parts store they should be able to help you.
If it's the same problem as mine where your car runs hot but at the same time can kinda maintain a decent temp, then it's not the sensor I have a new one with the problem persisting, also, does anybody else have problems with fan fuses blowing over and over??
I forgot to mention mine is an 08 2.2L
Thelittleguys answered 5 years ago
Some models have a resistor mounted in the fan shroud that could be a possible cause, just run a jumper wire and bypass the resistor. If the fan works replace the resistor. If the fan does not kick in after that check for power at the fan itself, if the fan has been blowing fuses I would suspect you will need a new fan motor. Also if your temp gauge is showing a temperature on the dash I would not suspect that as an issue. Had it been chowing three dashes or no temp at all the fans would run at full speed as a default.
