sounds like a blend door acctuator bad
If the system was flushed you could have an air pocket in the sytem.
Check the return hose from the heater core it should be hot if not you have air in the system.
Yes, if the blower isn't working. If it turns out to be the fuse, and it blows again, you probably have a bad blower motor.
If engine is not reaching operating temperature, then replace your thermostat. If the engine is getting hot, feel both heater hoses ( passenger side they go thru the firewall) they should both be hot, if only one is hot, your heater core is probably plugged and should be flushed. I hope this helps you. Mark
AnswerDepends whats broken ie. blows cold, no blower at all ???????no blower at all
If by quit working you mean quit blowing, the things to troubleshoot are the blower motor, the blower motor resistor switch, or the blower motor speed selector switch. If by quit working you mean it only blows cold or warm air, the thermostat is probably stuck in the open position.
The AC and heater are completely different subsystems. The heater relies on heat generated by the engine and circulated by the engine coolant (radiator fluid) while the AC uses a belt driven compressor and separate fluids. Their only normal commonalities are the blower motor (which you said works), the ducting and the control head.
Assuming the blower fan is working but it blows cold air, it could be,Faulty temp blend door actuator.Plugged up heater core.Faulty thermostat,Low coolant level,
You need to check your heater core, and blower this are the most probable causes When you flush the coolant on this car, you are supposed to remove the thermostat first-another fine GM concept. IF the there is no volume blowing through the vents, it is a problem with the blower system, not the cooling system. IF it isn't hot but blows okay, it is the cooling system. There is a bleed procedure in this motor as well to remove air pockets. I'd try a t-stat first.
If there is an issue with your Ford Focus heater that blows intermittently it is a sign that the blower needs to be replaced or cleaned. A certified mechanic can do a diagnostic check to verify and make the necessary repairs.
we changed radaitor & thermastate , now heater blows cold air
Ok..I figured it out. Turns out the rear defroster is the problem. When I unplugged it from the back windshield, blower/heater works great!! So...to all those out there..if your blower motor blows fuses...check the blower motor first...then the HVAC and heater fuses, then rear defroster if you have a cavalier!
probably the heater core is plugged
Turn the key off and remove it. Unplug the electrical connector at the heater blower, then unbolt the blower and pull it out. Place the new blower in position and bolt it into place. Connect the electrical connector, then start the car and verify that it blows.