If you change or remove the thermostat, and no change; might be the heater core. If that still is not the fix, check the circuit that controls the a/c in the main fuse panel under the hood, this car turns the electric fan on when a/c is used, a problem in the wiring of the a/c is sometimes a cause for overheating due to the fan not kicking on when it should or at all. Pretty easy to check, open the hood, start the engine, look at the fan with the a/c off, then turn the a/c on, the fan should begin to spin. Be careful of the fan, hands clear.
Friday, August 17th, 2007 AT 11:54 PM