Have you checked the fuse under the dash? Are the other temperature controls working? It would most likely be the blower motor if the fuse is good and the controls work. It could also be the Thermal Overload switch, which is mounted in the blower motor housing by 2 screws if I remember correctly. My blower motor quit blowing and I switched EVERY component individually with parts from a second car. All of the components worked. I even measured the voltage which read the same on both cars. I was completely baffled until I found a comment online somewhere regarding a component near the battery--I don't recall if it was a relay, power transistor, or what. At any rate, there are two nondiscript black square things attached directly in front of the battery with wiring connectors. One of these is for the blower fan and can have a broken wire or corroded connector. In my case, once I knew to look at it, I found a wire had broken off. After re-connecting it, everything worked fine.
it should be close to the fan in the front of the evap case. passanger side firewall engine compartment
The diverter, or blend, door, is not working properly, The door is either feeding the heat through the defroster, or closing the heat completely off.
it is a heater. heat. it blows heat. warm air
What do you mean by "has no heat"? No air blowing out, blowing out cold air when heater is on, blowing nothing at all? Heater not turning on? What specifically is happening?
No one knows if:The heater is NOT blowing - or blowing on high speed only, or... The heater IS blowing, but the air is NOT hotEither way, the "Related Questions" below will get you started
check the heater control valve. these things tend to stick either open or closed. it may also be your blend door. check the heater control valve first, for you dont have to take the dash off.
The fan motor has a short...change it.
Fuse, switch, speed resistor or motor.
You have a bad blower resister..............
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.
Only the fan is working, there is no gas burning (gas heater) or the electric heating element is not working(electric heater)Answeris it electric gas or oil Its gas.
Check fuse if the blower is not working. If it is then replace your heater core. if its not then replace your fan switch.
AnswerBad thermostat, clogged heater core, or a defective heater control switch. If an engine has not been running long it will not have warmed up, the warmth from a car heater usually comes from the engine.
faulty control valve on heater or air in the lines
If your heater is a heat pump , then yes.
Low coolant and a clogged heater core are possibilities.
If you feel no air blowing at all (when you are not moving) then your fan is not blowing. If it is blowing air, and it is cold, when the heater is on, then most probably your heater core is leaking, or is clogged. These are easily replaceable and go bad all the time in older cars.
your car stalled?
Could be a bad thermostat or heater core
You may need to replace your Thermostat or your Heater Core.
Check your fuse
yes it will shut down. the low pressure switch will shut it down.
One reason your home electric heater is blowing cold air is the heating elements are burned out. A bad thermostat may also be the problem.
did you check the heater core because my truck did that and that was what was wrong