What could cause the heater air conditioner blower motor on a 1995 Olds Aurora to run all the time - even when the ignition switch is off?
How do you fix heaterair conditioner blower fan for a 1992 Mitsubishi Galant with no power to the blower or heater relay?
What would cause the heater blower motor on a '94 Explorer not to operate if you shut the vehicle off for a few minutes and restart it?
Why does the air condition and heater blower motor run when air condition and heater and ignition are turned off?
Depends on what you mean by heater will not work. If the blower motor will not work, it can be a blown fuse, bad blower motor, bad blower motor switch, or a defective blower motor resistor pack. If you mean that the blower motor works but there is no heat, then it can be a clogged heater core, thermostat stuck open, or defective heater control valve.