check the coolant level first, low coolant will cause no heat, always check all fuses just in case
Because it's broken.
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
checked antifreeze level???
It has a bad "Blower Motor Resistor" The fan switch itself is fine.
Start with flushing both heater cores. The rear one may be plugged with crud.
Get the air out of your heater core.
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?
The most common reason a automobile heater blows cold air is the water level is low. Check the water level and fill to the appropriate level.
the heater blows warm air when fan is on low but blows cold air when fan is turn to higher setting
you must have low coolant or a bad heater core
we changed radaitor & thermastate , now heater blows cold air