Why does your ac and heater fan turn off and on
If you are asking about the blower you only have one that controls both the heater and the a/c............
Blower fan resistor under glove box...by passenger's feet...!
You may need to replace the heater\ac control switch, it may be stuck in the off position which would prevent the blower and the ac compressor from turning on.
1 engine cooling fan and 1 heater/ac blower fan
Yes, a dirty cabin/pollen filter will restrict the ac/heater fan output.
Check the fuses.If not the fuse, test the resistor down by the blower motor.
The blower motor resistor pack is bad.
Resistors control the speed of the AC/Heater fan. These resistors are switched on and off in various combinations to create the different fan speeds. When the resistors burn out your fan will only work on the "HI" setting. The "HI" setting doesn't use any of the resistors and that's why it works. These resistors are near the blower and the blower is beneath the dashboard on the pasenger side. Just have to located resistors now.
No. The ac and heater fan only has one resistor. The control switch is also failure prone on that vehicle.
No. An AC/heater control module is a computer that controls and automates the operation of the heating, ventilation, and air conditioning systems (HVAC).The blower resistor enables the blower motor to change the speed of the fan.
Check the blower motor fuse. Also check the fan relay and resister pack, If all of these are ok then the blower motor probably is bad.
Blown fuse, defective blower motor resistor pack, defective blower motor, or defective fan speed switch.