Skip the auto shop - Our mechanics make house calls

Q: Ac is vibrating when is turned on?

asked by on

When I turn my ac on it blows out cold but then it starts making a loud vibrating sound. Every so often it might stop for a brief time but starts again. I tried out my heat n it also did the exact same also.

My car has 100000 miles.
My car has an automatic transmission.

The vibration is coming from the blower motor. The blower motor is behind and below the glove box and sometimes it can suck in items that get caught in the blower fan and will cause vibrations and noise. You will need to have the motor removed and inspected to see it a piece of paper or something else is in the blower fan. Once it is cleaned then make sure to keep loose materials and excess items out of the glove box - as those could also be a source of vibration noises. If you want to have this checked out, a technician from YourMechanic can come to your car’s location to inspect the AC system and let you know if any repairs or adjustments are needed.

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: How do I set the auto lamp?

Your truck has a feature that will allow your headlights to stay on after you turn the vehicle off. This headlight feature is called the Autolamp. You can adjust the settings of Auto Lamp to keep the headlights on for...

Q: Really bad AC, do I need to replace the system?

The 2010 Chevrolet Traverse air conditioning system has a history component failure on different models which can be annoying. For the owners that have multiple failed components in one vehicle, it can become a nightmare. Some of these issues have...

Q: Won't crank?

Hi there. From the description you have provided, there may be a poor connection at the battery terminals. The replacement battery may have already failed. The alternator may not be properly charging the battery. The starter may be drawing too...

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...
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...
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...