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over heating

Question Description

If my truck is over heating and I turn on the heater and it cools down what could be my problem?

 

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Final Answer

Hi,

I would suspect the following

1. Bad or failing thermostat
2. Weak or failing Radiator fan( if electric)/ fan clutch
3. Air pocket in the system. If your car has a bleeder, warm up your car and open the bleeder to let the trapped air escape. Most cars are not equipped with the so called bleeder.

Veedeoo (123)
Purdue University

Anonymous
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