Q: My heater/air conditioner blows out hot and cold air appropriately, but makes a horrible grinding noise

asked by on

My car properly blows out hot and cold air but it makes a horrible grinding noise and sounds like the motor is going to seize. The only difference is when the fan is turned higher and it starts to whine as well. Is this something I can repair myself or do I need to have it serviced. And will it cost a fortune. It's paid for and might not be worth a huge sum

My car has 127998 miles.
My car has an automatic transmission.

This is a sign of a faulty blower motor. As you know, these have electric motors in them that wear out over time and will begin to make squeaking or grinding noises as the bearings begin to wear out. The electrical contacts may also wear out causing the motor to fail. I would recommend having an expert from YourMechanic come to your location to diagnose and replace your blower motor.

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 heater/air conditioner blows out hot and cold air appropriately, but makes a horrible grinding noise

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: 2001 Toyota Highlander been sitting a while. Had to jump start it and when we started, it over revs just under red on the dial.

Hi there. Usually a problem like this is caused by an idle control valve that is stuck open or throttle body that is damaged. It's also possible that the throttle control is stuck and needs to be repaired or a...

Q: No heat, no sound, no nothing

Hi. An electrical diagnostic by a certified professional would determine if the blower motor, resistor, relay, wiring, and switch are operational. It is not unusual for the resistor block to go bad and certainly that can be looked at first....

Q: Can a transmission from a 1996 Dodge Caravan fit inside of a 2000 Chrysler town and country? Both are a 3.3L engine.

Claimed by Kevin Gainer

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...
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...