The year, make and model info would help but generally the heater blower motor resister is located close by the heater blower motor.
If you are referring to the blower motor squealing, then I would suspect the blower motor bearings have failed.
blower motor bad or no power to it chech fuses blower switch blower motor
A bad heater blower motor resistor would effect one or more blower speeds other than high.
Blown fuse? Bad blower motor? Bad blower motor resistor? Bad blower motor switch?
The only relay in the heater system would be for the high speed function of the blower motor. That rely would be located under the hood, on the firewall, close to the blower motor resistor.
Blown fuse, defective blower motor resistor pack, defective blower motor, a bad switch, or disconnected or loose wiring.
Answer 1. blown fuse 2. broken wire 3. broken heat sensor (on side of heater housing, inside car) 4. burnt wires 4. bad blower motor speed resistor 5. bad blower motor 6. bad blower motor switch
The relay on the heater/blower circuit on a Ford Escort MK6 is probably behind the glove compartment. There are two popular places that Ford puts its heater/blower relay switches. The other place would be next to the blower motor itself.
Bad blower motor? Blown blower motor fuse? Bad fan switch? Bad blower resistor pack?
Bad bearing in blower motor?
Replace the resister, if that doesn't work replace the blower motor.
I would check any fuses/relays related to the heater or blower motor. If the heater fan doesn't work, could be a bad heater blower motor resistor(if has one) which are usually inline in the ductwork or out next to the heater blower motor under the hood. If the fan does work w/no heat then could possibly be a bad thermostat(stuck open) or control head.
I would guess a loose connection somewhere. Probably the blower motor. It can also be a defective blower motor resistor pack.
Could be, heater blower motor has failed. blower motor fuse is burned out. blower motor speed resistor is burned out. blower motor switch is bad. or, if the blower motor works but you have no heat it could be, cooling system is low on coolant. thermostat is stuck open. heater core is plugged. temp blend door actuator is faulty.
Check at the blower motor itself. Have it turned on and tap the end of the blower motor with a hammer. I did this and found out that the blower motor was going out. The blower motor is on the top passenger side under the hood. Also check the wire connections. Make sure they are seated good. If this includes for the heater then I would say the blower motor is bad.
If the heater fan works on all speeds, then the blower motor, blower fuse, blower relay, and blower motor resistor pack are all good. If the fan runs but nothing comes out of the vents, you have a 'mode door' issue (which might include a bad control head).
Is it the blower motor or is it the fans in the front?if its the fans they will come on at anytime to help cool engine down better.If its the blower motor for the interior heat and air you got a electrical problem. Is it the blower motor or is it the fans in the front?if its the fans they will come on at anytime to help cool engine down better.If its the blower motor for the interior heat and air you got a electrical problem. If it is the blower motor for your heater then it is definatly you blower resistor
WEll, Since the ABS isn't as wire intensive as the blower motor and the blower motor is constantly turning, my first inclination woule be to disconnect the blower motor assuming a shorted out motor. This should be much easier than tampering with the ABS and much less detrimental if that isn't the problem.
Is the blower working? need new thermostat ADD-ON: if nothing happens when you turn it on it could be a fuse. Check your manual for the location of the fuse panel. Check the fuse for the blower motor or heater depending on how it's labeled. If you do not have a manual check the link I added for places on-line where you can find downloads.
The high speed relay for the blower motor would be found under the hood, on the passenger side of the firewall, close to the blower motor speed resistor.
plugged heater core or bad blower motor or vent plugs
The blower may simply have burned out. If the blower is out then the heater probably still works.
Possibly a relation to the blower motor/ heater door accuators.