mackayaw

I have seen those threads but I don't believe it is a head gasket because what difference would it make if the thermostat is in or out. Thanks

Hello All, I am a owner of a 1998 Subaru Outback and have recencly had it overheat. After driving about a half an hour the engine overheated and the overflow flow tank overflowed with coolant. We replaced the thermostat but it was still overheating so we pulled the thermastat completely and it has not overheated since. I tested both the new thermostat and the old one and they both fully opened at 195 degrees F so they seems to be functioning properly. I am thinking it might be the water pump and it can't pump the coolent with the added pressure caused by the thermostat but was looking for any other suggestions or comments. Thanks.