Skip the auto shop - Our mechanics make house calls

Q: Is a transistor and a blower motor resistor the same thing?

asked by on

I recently went to a couple mechanics because my AC was not working on modes 1-3 but worked on 4. I also had a high squeaking sound and a burning smell. I was told I need to replace two parts. The blower motor resistor and the transistor. I replaced the blower motor resistor but not the transistor. What is the difference? Can it harm my car by not replacing the transistor?

My car has 99599 miles.
My car has an automatic transmission.

When you were told to replace the resistor or the transistor the person that told you did not know if you had manual or automatic a/c. Your car will have a blower resistor for manual a/c blower controls and a transistor if you had automatic a/c controls. Your blower control is manual and therefore you have a blower resistor. The car will only have one or the other and will serve the same purpose depending on the type of blower control you have. The squeaking and burning smell may be from the blower motor. I would recommend replacing the blower motor with resistor(https://www.yourmechanic.com/services/heater-blower-motor-resistor-replacement) This should fix your problem and do not have to replace blower transistor since your car does not have one.

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: Power window not working

Hello, have you tried the window from the switch on the passenger door? If it works from that switch, there's a chance that the switch group on the driver's door has failed. If it doesn't work from both switches, the...

Q: Smoke coming from muffler

Hi. Consider the weather, as this can change the diagnosis. Hot steam is a product of the operation of the gasoline engine. As the vehicle is running in cold weather, the hot air may be much more noticeable. On a...

Q: Climate control is not workkng

You will need to see what component blew out all the refrigerant out of the A/C. In the process, it may have blown a fuse to the A/C causing no blower or compressor to come on. If you seen smoke,...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.