Question about 2002 Chevrolet Impala
If it is the temperature light ( not the check engine light) you may wish to check and see if the engine is actually hot.
(Be advisesd. An overheated engine is really serious! )
With the engine not running and cold, and the car level, take off the radiator cap very slowly to relieve the pressure, be certain the radiator is full, and then start the car.
Stand back in case the radiator blows antifreeze out.
Now start he car, and with the engine running, and when the temperature light is on, very carefully feel or smell the radiator and top radiator hose. If these are not hot, you problem may be a stuck thermostat. If the thermostat is stuck, you should sense the heat by smelling and listening to the motor.
If you have an overheating issue, please refrain from driving the car until it is fixed, or you could totally destroy the motor.
Also, there are 2 electric blower fans behind your radiator. One is for engine temperature, one is for the air conditioning circuit.
If the temperature light comes on, one of the blower fans should be running. If neither is, that may be your problem.
Be sure to leave your heater/air conditioner off during this test.
The most common problem is a bad temperature sensor for the fan, then a bad fan itself. After that, a stuck thermostat.
Blessings on your figuring this out.
Posted on Apr 13, 2015
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Posted on Jan 02, 2017
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