what is the make and model and can you hear the blower motor running
When you have the heater on, does it just blow any air at all? or no air?
first of all i hate to say an obvious answer but does the heater motor even turn. Does it blow air at all. The first thing i would check is if the fan motor is blowing any air at all. If not u need to put in a new heater fan motor. first of all i hate to say an obvious answer but does the heater motor even turn. Does it blow air at all. The first thing i would check is if the fan motor is blowing any air at all. If not u need to put in a new heater fan motor.
Your front blower motor has gone out. There is a front and a rear blower motor.
Any heater that only blows luke warm air isn't getting warm or hot water to the coil. This sounds like a problem with the thermostat not closing, and allowing the engine to heat the water properly for the heater.
your heater core hoses could be plugged up and not letting much hot anti-freeze into the heater core then when you try to blow alot of air through it it cools the warm air off too much and you get not so warm air. try a cooling sytem flush
that heppend to my car i had to finaly replace the heater blower so it could be the same thing
A vacuum leak, or one of the doors is sticking/bad vacuum motor in the heater box.
You need to first check that you do not have any vacuum leaks and then check the a/c / heater door operations, if all are working then its possible that you have a slightly clogged heater core.........
indoor air fan is not functioning. for that, there are many possibilities.
No. It can be a blown fuse, bad fan motor switch, bad fan motor, bad fan motor resistor pack, or a loose or disconnected wire.
Any of the following can cause this......... 1. Bad a/c - heater controller.. 2. Bad a/c - heater controller inside door operation.. 3. Bad, broken or cracked vacuum line/lines..
First find out if the blower works. To do this disconnect the hot wire from the blower and use a jumper wire from the positive of the battery and connect it to where that hot wire was. if it does not go;;; then check that the blower motor is grounded.
The heater core is plugged. Blow it out with a compressor. If that does not work replace the heater core.
try check the blower fan itself. although everything is working you will something to move the air.
If it is in defrost mode it will only blow air out onto your windshield, but if it is the mode to blow air out the console towards the personnel inside and it still don't work, then it could very well be that the linkage controlling the plate movement may have become disconnected in the dash.
Check your antifreeze/coolant level in your radiator. If it is "low", there will not be enough coolant to "flow" through the heater core, to produce any heat. If it is low, refill your system with the proper mixture of coolant and also check for any coolant leaks.
If you know the fan motor is good but it will not work, first check the fuse. If the fuse is good, then it is either the fan motor switch or the resistor pack that is defective.
The mixing door isn't working. Take it to the garage as it porbably is the controler. First make sure there is vacuum getting inside the cab from the engine.
thermostat is stuck open.
On some cars this is because of the heater circuit design, in that if there is air in the cooling system it can gather in the heater core when at idle, and allow substantially less, if any, heat exchange. When the engine RPM goes up, as when driving, the air gets forced out of the heater core by the fast moving coolant and you have heat again. If this is your problem the solution is to bleed the cooling system on that vehicle, per manufacturer's instructions.
have you tried any radiator flush kits? Try this , drain the radiator below the heater core lines and disconnect both line, take compressed air (air compressor) with a rag and a blower, stick in one end and release the pressure, watch out it will blow some junk at you. put back together and refill
because of the chemicals inthe air
I would suspect that the heater core is either clogged or the heater temperature control valve is defective. Have you ever serviced the cooling system? It is also possible that the thermostat is stuck open. I would drain and flush the cooling system. Install a new thermostat, install a fresh 50/50 mix of the correct antifreeze and distilled water. See what you have before proceeding any farther.
Possible blown fuse
The selector switch needs to be fixed or replaced.