Quote Originally Posted by oj88 View Post
A missing thermostat valve will never cause an engine to overheat. If anything, it will be the opposite.



i will have to disagree with this. you probably haven't worked on cooling systems long enough. some thermostats are three way and if you remove the thermostat, the coolant only circulates in the engine block and most often does not get to the radiator. the radiator might seem normal but the engine will have fever.