cooling fan on all the time - Maintenance and Repair Forum

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cooling fan on all the time
Tuesday, January 15, 2008 3:04 PM
when i start the engine cold the cooling fan comes on and stays on the check engine light is on to. i change the temp gauge and relay and nothing.
i don't have a/c. i did do a rad flush recently . dose any one have any idea what it could be?

Re: cooling fan on all the time
Tuesday, January 15, 2008 3:13 PM
Try resetting your computer,it might work,might not.



15.2@89mph 2.171 60ft. 9.830 1/8 R.I.P. "LULU"
Re: cooling fan on all the time
Tuesday, January 15, 2008 3:21 PM
Whenever the check engine light is on the computer turns on the cooling fan as a safety feature.
Re: cooling fan on all the time
Tuesday, January 15, 2008 5:57 PM
Need to find out what code you have. The ECU will turn on the fan on certain check engine light codes, but not all.



FU Tuning



Re: cooling fan on all the time
Tuesday, January 15, 2008 7:34 PM
You definitely need to find out the code. Mine did this last year - it was a misfire code for one cylinder. I'm betting that they program the fan to come on to help keep air moving past the converter, since a misfire would load it up with extra fuel and get it rather warm.
Hopefully yours will be a cheaper fix than mine though. I had a burnt exhaust valve on cylinder #3. Only 75 PSI compression left versus 180 on the other 3. I just wish I had done the compression test first before trying other stuff (plugs, wires, injector). I knew what the code was though, so I was trying to correct what I "thought" could cause the misfire.
Get the code, and we'll try to help once you know what it is.
John
Re: cooling fan on all the time
Sunday, January 20, 2008 12:33 PM
i gust got the code it's P0132 02 sensor circuit high voltage. how do i fix that?
Re: cooling fan on all the time
Sunday, January 20, 2008 2:41 PM
Is the code persistant?

What type of sensor, 1 or 4 wire?

Which sensor, pre or post cat?

Try tightening all the grounds. Floating grounds can cause this.

2002 Cavalier 2200 5spd

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