CHEVY COOLING FAN

1999 Chevrolet Cavalier

Tiny

hurtfeelings

December, 13, 2008 AT 12:00 PM

Engine Cooling problem
1999 Chevy Cavalier 4 cyl Front Wheel Drive Automatic 180000 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.

FOUND 42 RELATED QUESTIONS

4 Answers

Tiny

mmprince4000

December, 15, 2008 AT 7:09 AM

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.

Tiny

hurtfeelings

December, 15, 2008 AT 3:45 PM

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

Tiny

hurtfeelings

December, 15, 2008 AT 3:46 PM

Also could it be the wrong antifreeze causing these problems

Tiny

mmprince4000

December, 16, 2008 AT 8:56 AM

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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