M mark Guest Nov 4, 2008 #2 possible heater core clogging up so it does not have the flow that it should. could also be a thermostat also may want to look at your heater door. it might be limited to how far it can open
possible heater core clogging up so it does not have the flow that it should. could also be a thermostat also may want to look at your heater door. it might be limited to how far it can open