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.
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
December, 15, 2008 AT 3:46 PM
Also could it be the wrong antifreeze causing these problems
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.