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!
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2006 Mitsubishi Lancer Question: Heat blowing cold at a stop???
Answer #1patrick mannion from Greg Solow's Engine Room, January 06, 2012, 00:40Master
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.