maybe your a/c has problems try to check the a/c maybe its time for maintenance or repair
This can happen if the water or coolant level in the radiator is low. There are other causes but this is the most common.
Heater core changed three years ago,I changed Thermostat Heater still blows cool air.
can you please clarify what you mean, do you mean that the front heater blows cold but the rear blows hot or do you mean that when the heating is on cold it blows hot? many thanks paul
the heater blows warm air when fan is on low but blows cold air when fan is turn to higher setting
Get the air out of your heater core.
The heater fan ONLY blows the air, it does not make the temperature of that air. Your heater temperature controls how hot the air is. Adjust your heater temperature for hotter or cooler air.
Not all cylinders firing? Check spark plugs/ wires Do a compression test to determine which cylinder is not firing
we changed radaitor & thermastate , now heater blows cold air
heater hoses might have been disconected
ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air? ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air?
You have vacuum line leaks somewhere.
you must have low coolant or a bad heater core