2001 Chevy Cavalier Cooling fan not coming on

ALXOLI

MEMBER
2001 CHEVROLET CAVALIER
4 CYL
FWD
MANUAL
135,000 MILES

While sitting in traffic for long periods of time, my veh will start overheating. I can turn my ac on and the fan will kick on and cool the engine but otherwise the fan will not come on. I had someone check the relays and fuses and they appear to be working. I have not replaced them to see if that corrects the issue.

5 Replies

JDL

MECHANIC
16,098 POSTS

Hello, anybody check the coolant temperature sensor? Are there any codes? Some of the national brand auto stores will check codes for free.

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Tuesday, October 3rd, 2017 AT 9:46 PM

ALXOLI

MEMBER
4 POSTS

I replaced the coolant temperature sensor along with the fan relay and the fan is still not coming on. Any other ideas?

Michelle

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Tuesday, October 3rd, 2017 AT 9:46 PM

JDL

MECHANIC
16,098 POSTS

Hi, I should have told you to check wiring circuits before replacing anything. If you unplug the CTS and turn on the key, does the fan come on? With key on, can you check for voltage at one of the plug terminals?

Were there any codes?

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Tuesday, October 3rd, 2017 AT 9:46 PM

ALXOLI

MEMBER
4 POSTS

The car is not throwing any codes. I went ahead and just replaced those parts since they were not expensive just to see if it would take care of the issue.
I did check the wiring and everything appeared fine. The only issue I had was the temperature sensor was pretty corroded and since it was only about $15.00, it was just easier to replace.

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Tuesday, October 3rd, 2017 AT 9:46 PM

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