Reasons Why Your Car Heater is Blowing Cool Air Common car heater problems explained Car issues can make people scratch their heads. If your car heater is suddenly blowing out cold air instead of heat in the middle of a bitterly cold winter, you have a good reason to be frustrated. Unreliable car heaters can make the cold winter months .Hi. I have a Jeep Liberty. The heater used to blow nice air and then barely warm air. Temp gauge shows a little less than half way. Radiator, thermostat, temperature control module have all been replaced. Heater core has been flushed. Was driving and heat was barely warm and then started blowing very cold air. Busted radiator hose. Replaced. Still blowing ice cold air and now smoke is coming inside of vehicle..The heater control system of a vehicle runs the blower motor, blend doors, and temperature operation. Some of the common problems we see when a vehicle heater does not blow warm air are Low coolant level on a vehicle due to a coolant leak. Thermostat that is stuck open. Plugged or leaking heater core. Heater blower that is not functioning..What could cause my car to alternately blow and cold air when the climate control is set to? Why is my heater is blowing cold air in my car? What might be wrong with my car air con when it just blows out normal air?.My car has only over heated once and that was last year, it did needed anti freeze but this year my car’s heater doesn’t work but it does blow air but not air. My mechanic says is that radiator but I feel like I’ am being over charge for it. I don’t think that’s really the problem of it..Car heaters that blow cold air. Something is usually preventing antifreeze from circulating through the heater core. The problem could be a switch or valve, or the heater core could be plugged..Plugged heater cores can also cause a car’s heater to blow cold. The best way to check for this is a non contact thermometer, which will allow you to check if coolant is flowing through the heater core or not. If it isn’t, then flushing the heater core will often fix the problem..What could cause my car to alternately blow and cold air when the climate control is set to?.Reasons for car heater to not blow air? PM Subscribe Need help from mechanics! Asking for a friend On a Mercury Marquis, the air temperature control does not work. What could be the cause and possible ways to fix it?.
Good morning forum. Need some advice. Turned on my defrost this morning on my Tacoma Double Cab X and all I got was cold air .Heater not getting I have a pontiac grand prix. Heater fan works, but blows cool air. We replaced the thermostat but that didn’t make a differ .