May be a defective thermostat or heater core
Plugged evaporator? Bad fan motor?
How did you change the thermostat?
Assuming you want it to blow hot, it could be low on coolant, a stuck open thermostat, a plugged heater core or a faulty temp blend door.
Low Coolant? Bad thermostat? Heater core plugged or restricted? Heater core airbound? Heater control cable not working?
there is a short in the horn ring you need to take it completely apart
The fuse diagram tells you what each fuse is for (what circuit the fuseprotects) , the number on the fuse tells you how many amps the fuse can handle before it will blow.
heater will not blow on a 1996 ford contour
if the heater does not blow out warm air change the setting.
Plugged heater core. Try flushing it.
if youre trying to turn the heater on and cold air comes out, then its most likely the heater core
Replace fuse #36 in the inside fusebox.See "Related Questions" below for more
if antifreez is blowing into cab, u need to replace the heater core the core has a hole in it. thses are not repairable and they are cheap to buy