I changed my car thermostat, and now it overheats. This only happens when the engine is cool, and you drive like one or two miles. Once it overheats, I just loosen the radiator cap, and the car goes back to normal. What could be the problem?
There could be air trapped in the system. Sometimes it is necessary to purge the thermostat system more than once.
Updated on March 23, 2018
By Dan Ferrell