change it....change it.....they are less then ten bucks, alot cheaper then a blown head gasket
Usually the car would run cool, unless the thermostat is stuck partially open.
Thermostat is stuck open Thermostat is stuck open
thermostat can be stuck open
Overheating if stuck closed, no engine heat if stuck open.
Could be a stuck open thermostat.
Stuck open thermostat.
A thermostat can be stuck open or closed. If the engine runs to cool it is stuck open. If the engine is running hot it is stuck closed. If you don't have these problems you should'nt have to change it.
The thermostat is probably stuck open, even when the engine is cold.
If the engine is overheating, the thermostat is stuck closed. If the heater is not putting out enough hot air the thermostat is stuck open. Change the thermostat as a normal part of maintenance when changing coolant.
A bad thermostat could be stuck open or stuck closed. Drop it in boiling water and it should open. Then close when cooled off.
Low coolant or stuck open thermostat.Low coolant or stuck open thermostat.
If the thermostat is stuck in the open position, there is no way to keep it from staying open except by replacing it.