What happens if the resistor on a heater fan goes bad?
Without this part you will not be able to change the speed of the airflow from the blower motor. It is also possible that the heater motor blower may not work at all. If the resistor has gone bad, it is likely that the fan will work only on the highest speed.
When to replace a heater blower motor resistor?
If your fan is stuck on high, you likely have a bad heater blower motor resistor, and should schedule to have it replaced. What common symptoms indicate you may need to replace the Heater Blower Motor Resistor? Blower motor only operates at 2 speeds instead of 4 speeds. Blower motor is not functioning (no air from vents).
How does a resistor work on a heater?
The resistor enables the heater blower motor to change the speed of the fan. Without this part you will not be able to change the speed of the airflow from the blower motor. It is also possible that the heater motor blower may not work at all.
Where is the heater fan resistor located?
The heater blower motor resistor is located underneath the dashboard in the heater/AC compartment. The resistor enables the heater blower motor to change the speed of the fan.
Why is my heater blower motor resistor not working?
This occurs due to the failed blower motor resistor not being able to control the flow of electric current, it could be that the resistor is somehow bypassed and the power is directly being fed from the switch. Excessive current can overheat and permanently damage the blower motor resistor
What to do if your AC heater fan is not working?
AC/Heater Blower Fan not Working – Motor or Resistor? Quick Fix If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.
Where can I get a new blower motor resistor?
I replaced the blower motor resistor and the control unit with new parts from rockauto (ACDelco). I’ve checked the fuse in the dash fuse panel and it is good.
How much does it cost to replace a heater motor resistor?
The average cost of a blower motor resistance replacement is between $80 and $150, and labor costs are estimated between $35 and $80, with the price of the unit between $50 and $75. The estimate does not include taxes and fees. Founder, owner & main author of Mechanic Base.