Question about 2002 Ford Ranger Regular Cab

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Runs hot with ac on - 2002 Ford Ranger Regular Cab

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Most likely the thermostat is not opening all the way. It would be the first thing a mechanic would replace. If that didnt solve the problem then ,,,,providing the coolant is in good shape and the radiator is not clogged, then the water pump would be removed to inspect the inpeller blades for deterioration which usually happens when the no antifreeze is used.

Posted on Jul 22, 2010

  • Susan Price Jul 22, 2010

    easiest way to check the fan operation is to turn the AC on. The fan should turn on when you do this. If it doesnt turn on then the problem is either a bad computer, a bad relay or fuse, or a failed fan. If the car does not overheat with the AC off at idle then I would suspect a thermostat issue.

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Make sure radiator fan is working....if not check fan fuse, if fuse is good check fan relay, if relay is good fan motor may be bad, replace
Also, may need to change thermostat.
Check coolant levels

Posted on Jul 22, 2010

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