Skip the auto shop - Our mechanics make house calls

Q: fan won't work on first setting

asked by on

My fan won't work on speed setting 1. According to my research, there might be a register that went bad. I just replaced the controls, but the fan still doesn't work on setting 1. Any idea what other things I might try?

A: Hello. When the fan motor is not working on...

Hello. When the fan motor is not working on a specific speed, it’s most commonly due to a problem with the blower motor fan resistor. The resistor’s job is to send the proper voltage to the blower motor fan for each speed of the fan.

When the resistor fails, it will not send the right amount of voltage to certain speeds, in your case fan setting number one. In this situation, replacing the blower motor resistor would be necessary to fix the problem. This should be done by a certified technician.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Rear Wheel has bearing/seal issue

Hi there. If you're going to attempt to replace the wheel bearings on your 2004 Jeep Liberty, I highly suggest purchasing a service and repair manual, as it will provide you with a detailed list of replacement parts, seals, gaskets...

Q: I just had a water pump put in 2 weeks ago, now the fan belt is squealing and the water gauge is jumping around.

The fan belt squealing may simply be related to the belt just needing to be adjusted or lubed with some belt dressing. Your temperature gauge jumping around is a cause for concern and may or may not be related to...

Q: Car dying when stopping

Hi There! It sounds like you may have a dirty or failing idle air control valve causing your engine idle to fluctuate and eventually stall. The idle air control valve is a small valve on the engine's intake system that...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.