I don't know what is wrong, but we have eliminated the cooling fan operation, the radiator for restriction, the Thermostat as you have also replaced that ( not to say the new one may not be sticking), the radiator cap, and what I thought may have been a possible internal coolant leak. We have an overheating condition. It cools down when you drive because extra air is getting forced into the radiator cooling it.
I can only ask you questions as I don't have the car here to look at potential symptoms.
Are you adding any coolant, have you lost any? You have checked both the radiator and overflow bottle levels when its cold, right? (This is for a possible coolant leak)
IF you turn the heat on and blower motor at full how long does heat come out- run it for 5 minutes or so. IF it isn't blaring hot the whole time there is a restriction in the heater core.
Sunday, June 17th, 2007 AT 5:51 PM