After about 15 mins of driving, what does the temperature guage read?
Check to see if the heater hoses are about the same temp as the top radiator hose when the engine has ran for about 15 minutes. (Remeber the outlet hose to the heater core will be slightly cooler than the inlet hose---this is normal).
December, 7, 2012 AT 4:30 AM
I think that is kind of gone over in walk through. But if there is alarge temperature difference there may be air in heater core.