1999 Chevy Cavalier cooling fan

HURTFEELINGS

MEMBER
1999 CHEVROLET CAVALIER
4 CYL
FWD
AUTOMATIC
180,000 MILES

I have 1999 cavalier and the engine cooling fan is always running, I changed the temperature sensor, fuses, and checked all the wiring it is possisble that my obd is faulty.

Saturday, December 13th, 2008 AT 12:00 PM

4 Replies

MMPRINCE4000

MECHANIC
8,548 POSTS

More than likely the fan switch is bad. When it fails, it will default to running all the time to prevent overheating.

Also possible the relay is stuck, but I would replace the fan switch first.

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Monday, December 15th, 2008 AT 7:09 AM

HURTFEELINGS

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3 POSTS

I switched the relay, but it did'nt stop, also it burns gas horribly, shoots out black smoke, and the check engine light is on, it all started when a local mechanic broke temperature sensor trying to put on a new belt, please help I have to drive this car 60 miles to work back and forth

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Monday, December 15th, 2008 AT 3:45 PM

HURTFEELINGS

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3 POSTS

Also could it be the wrong antifreeze causing these problems

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Monday, December 15th, 2008 AT 3:46 PM

MMPRINCE4000

MECHANIC
8,548 POSTS

Take the car to any autoparts store for a free scan. See what the codes are.

If temp sensor is not working, it will run rich and cause a lot of driveability problems.

Have the scanner set to live data mode and see what PCM is reading as engine temp. If low 0 to -20, then the coolant temp switch is bad.

Do not confuse the coolant temp sender with the fan switch or the temp gauge sender.

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Tuesday, December 16th, 2008 AT 8:56 AM