Skip the auto shop - Our mechanics make house calls

Q: My AC blower motor blows like it's on low no matter what I turn it to. Any ideas?

asked by on

Blows hot or cold and will change from vent to defrost and all that no problem and will turn off. But no matter what setting (hi or low) I turn it to it only blows like it's on the low setting.

My car has 350000 miles.
My car has an automatic transmission. 2003 F-250 7.3

The blower control switch on the dashboard controls the circuit flow of the blower motor to adjust the voltage from low, to medium, to medium-high, to high. When on high, the circuit bypasses the blower resistor. The blower resistor will control all the other speeds. If the blower speed is on low on all the switch positions, then pull off the blower speed control knob and look at the knob to see if it is cracked and cannot move the blower switch. Replace the knob if cracked. If it is not a bad knob, then you will need to replace the blower switch. If you would like some professional help with this issue, contact a certified technician, such as one from YourMechanic, who can diagnose your fan speed control problem for you.

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
  • Home
  • Questions
  • My AC blower motor blows like it's on low no matter what I turn it to. Any ideas?

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: I have a 2002 Ford Taurus SES with no manuals. WhT type fuel filter does it take.

The fuel filter should be a YF1Z-9155-CA. This is Ford part number. Any parts store will have application for the replacement aftermarket filter.

Q: P0030 p0015 chk eng lgt on whining noise stuck 2 gear 1 yr had car let son drive 2 NV havent chk fluid N trans hope it wasnt low

The code P0015 is a bank 1 timing over retarded warning. The P0030 code stands for the heated oxygen sensor malfunction, which also pertains to bank 1. The oxygen sensor malfunction could be due to a failed sensor, heater, or...

Q: Having problems with my air conditioner putting out different temperatures from different vents

Hello. Typically when you experience only one side of the system doing this, it is because of a bad air door actuator motor. These are common failures on most cars. If I knew what kind of vehicle this was, I...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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.
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.