Skip the auto shop - Our mechanics make house calls

Q: My blower switch only works on #2 speed & high speed could this be the blower resistor?

asked by on

I hav replaced the 4 speed blower switch on the dash. MY A/C does work

My car has 150000 miles.
My car has an automatic transmission.

Hello there, a few common faults can cause your 1972 Oldsmobile Cutlass to only work on the #2 speed air flow. You are correct, the blower motor resistor could cause this fault. Other likely causes would be the fan control switch, blower motor, or a wiring harness fault. A qualified technician, such as one from YourMechanic, will be able to diagnose your air flow issues and move forward with any repairs required.

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!
  • Home
  • Questions
  • My blower switch only works on #2 speed & high speed could this be the blower resistor?

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: Heat in the front won't work

Hi there. The front heater core my be restricted. A cooling system flush may resolve the problem. It may be a faulty temperature blend door actuator if the blower motor is still not operational. Checking the fuse would be in...

Q: Tie rod loose

If one tie rod is loose, then more than one may be loose in the front end. The CV joint boot is most likely torn, causing the grease to leak. The loss of grease will cause the joint to go...

Q: Fuel gauge fluctuation

A fluctuating fuel gauge on your Oldsmobile is an indication that the fuel level sensor is failing. When this happens, you will notice that the fuel gauge is moving as you turn corners and the gas sloshes around inside your...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...