When I have the heat on in my car it blows fine when I'm driving, but when I come to a stop (ex: stop light, stop sign, etc.) it blows out dramatically cooler. Any suggestions what the reasoning could be? I have checked all of my vehicle's fluids and everything is at normal levels. Thanks for the help ahead of time!
Heat blowing cold at a stop??? on 2006 Mitsubishi Lancer
by L3535 in Orlando, FL on January 05, 2012
ANSWER by patrick mannion , January 05, 2012
My first thought was the coolant level was low or there was air in the system. Check the cabin air filter behind the glove box is not restricted, perhaps remove the two coolant hoses to the heater core in the engine compartment and flush and reverse flush the coolant passages through the heater core with a garden hose see if it seems restricted.