I change water pump an thermostat and when on xprsswy car runs extremly cold what could be the problem ?
was the thermostat the correct one for your engine?
I change water pump an thermostat and when on xprsswy car runs extremly cold what could be the problem ?
You probably have an air lock in the cooling system and it is not full of coolant. It could be that the thermostat is stuck a little open or not seated correctly or backwards, but I rather suspect you need more coolant in your system. Park the car with the nose a little uphill and after it cools, check the coolant level.