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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 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: How do I program a personal entry code?

You can program your own personal entry cod for the keyless entry keypad with just a few steps: 1. Enter the factory set entry code, which is located on the owner’s wallet card. 2. Within five seconds, press the 1-2...

Q: Q: Should I replace the timing belt?

Your engines timing belt is recommended to be replaced every 90,000 miles. If you cannot find proof that the timing belt was replaced at 90,000 miles then I would recommend timing belt be replaced. This engine is an interference motor...

Q: Ac compressor turning on and off

Hello. If the compressor is turning on and off fairly quickly then that means that there is still a pressure issue. It can be caused by low refrigerant or high pressure. It can also be caused by a bad A/C...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.