Skip the auto shop - Our mechanics make house calls

Q: fan to a/c and heat vibrates (dash) and gets louder on level 3,4,5. Quiet on 1 and 2.

asked by on

what is the cause of the noise and vibration? what do you think needs replaced or repaired. How much is the cost? is this something that's needs to be replaced if my son can withstand the noise or will it eventually get worse and quit working?

My car has 75000 miles.
My car has an automatic transmission.

A: It sounds like you either have damage to th...

It sounds like you either have damage to the fan assembly, making it out of balance, or you may have some sort of object like a dead rodent, that is making the fan shake like an unbalanced tire. This will always get worse with higher fan speeds. I suggest removing the fan assembly and inspecting it for damage, debris, or unwanted visitors. If you want to have this checked for you, a certified technician, like one from YourMechanic, will be able to inspect the noise and replace your fan assembly if 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・Save up to 30%

Get a quote

What others are asking

Q: Died,then wouldn't crank for a few min then cranked and drive but cut out once in the way back home.

This may sound like a dumb question, but when was the last time you put gas in it? It may be possible that the fuel gauge sending unit is failing and giving you a false reading. It is also possible...

Q: Engine making weird noises.

Seeking a mechanics advice when car issues come up is always a good idea. Especially when it comes to engine noises. Since I don't know what kind of noise you are hearing, I will try to explain what is important...

Q: My mechanic mistakenly put oil in my coolant tank, how much damage has been done?

Hello. You have a difficult situation on your hands and I'm sorry for what has happened to you. I would continue trying to flush your system as much as you can. Have an expert inspect any other damage or issues...

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...
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...
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.