Skip the auto shop - Our mechanics make house calls

Q: A/C blower is always runing even when the A/C is off

asked by on

A/C blower is always runing even when the A/C is off

My car has 225000 miles.
My car has an automatic transmission.

Hi There, It sounds like you may have a faulty blower motor relay that is allowing power to the blower motor even when the switch is powered off. The blower motor relay supplies power to this motor when you turn the switch to "on" that can sometimes fail. When this happens, you may notice that you will not feel anything blowing out of the vents at all. This may also cause the blower motor to work intermittently. I would suggest having an expert from YourMechanic come to your location to diagnose your vehicle’s blower motor system.

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: It doing hard starting, some time it starts once.

Hi there: If you're having difficulty starting your Kia Soul, it could be due to multiple issues; based on several different situations. In general, if a car is hard to start, it's due to a malfunction within the fuel or...

Q: Car jerking and hard to start

I wouldn’t jump the gun and replace O2 sensors yet. When the engine is cold and first starts, the O2 sensors are not used until they warm up. A poorly running engine, and/or exhaust leaks, can cause false O2 codes....

Q: my car got a new fuel pump in saturday and when i cranked my car it started put putting and immediately cut off... whats the prob?

Hello there, thank you for asking about your 2004 Kia Amanti. There are a couple of other things that can cause your symptoms. A failing engine speed sensor like a crankshaft position sensor can cause the vehicle to stall when...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.