The front expansion valve is clogged.
Your heater will blow cold air only.
It doesn't really blow it out it just warms the cold air.
you need to replace your heater core
it wont blow heat itll blow cold air
heater core possibly plugged and leaking
you are low on coolingliquid !
No, not if it's on a heat setting. Most home thermostats have a "Fan" setting that will blow cold air if the attic is cold.
you may not have the heater water hoses plugged in
replace front heater corefront and rear have independent heater cores
the heater core was stopped up just flushed it out ok now
You have run out of coolant, or the heater matrix is blocked.
Could be a bad thermostat.
Cause its broke!
Low on coolant, stuck open thermostat, plugged heater core, faulty temperature blend door,
Low coolant in the system. Defective heater control valve. Clogged heater core.
Either a faulty thermostat or you have a low coolant level.
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
if youre trying to turn the heater on and cold air comes out, then its most likely the heater core
Poor coolant circulation from a plugged up heater core. Try flushing the heater core and replacing the thermostat.
THE CAUSE for this is that when your cold air is on the petrol is used to create air. and that is how cars create cold air
One of the reasons a 2000 Jeep Cherokee heater would randomly blow cold air and then hot air and then cold might be that there is a problem with the hot/cold duct. The air or a vent might be inadvertently blowing periodically.
Could be the Climate Control Unit or Clogged heater core.
Low coolant? Bad thermostat? Heater control cable not adjusted properly? Heater core airbound? Heater core plugged?