either the thermostat or the fan is no good. You would need to locate the thermostat and see if its stuck open or closed!
it's because of heat transfer into convection .
Leak in heater core. Replace core.
The front expansion valve is clogged.
heater core possibly plugged and leaking
heater will not blow on a 1996 ford contour
if the heater does not blow out warm air change the setting.
It doesn't really blow it out it just warms the cold air.
Poor coolant circulation from a plugged up heater core. Try flushing the heater core and replacing the thermostat.
The heater does not blow air because it emits infrared rays that have heat molecules within them, thus releasing heat, not blowing it. A heater does not blow air becasue there is no moving air source within the heater. The heater emits infrered rays that cause heat to slowly flow out of the heater.
it has a partially clogged heater core.replace the heater core
Low coolant in the system. Defective heater control valve. Clogged heater core.
Could be a bad thermostat.
either need a blend door accuator or a heater box
Your heater will blow cold air only.
Your electric unit can blow fuses during the winter when you are running your heater for several reasons. The main reason would be that you have a faulty ground on your heater.
You need to replace the heater coil !
A restricted/plugged heater core can do that. Try flushing the heater core.
Possible causes are, low on coolant, thermostat stuck open, clogged heater core or vacuum scorce not getting to the heater control.
It could be the thermostat on the engine. If the engine does not warm up adequately the heater will never blow hot air.
check the switches and the motor
engine not warm, low coolant, or stuck thermostat
you would have to see a mechanic about that problem
the blown head gasket would make it over heat. but it wouldn't cause the heater to blow cold, it should actually blow hot if that is wat happened