Skip the auto shop - Our mechanics make house calls

Q: Whisting noise when increasing or decreasing speed

asked by on

I mostly drive the car on the highway and I've noticed a whistling sound that comes from under the hood. I can hear it both when I accelerate and decelerate. The dash isn't showing any lights on. What could be making this whistling and buzzing noise?

There is a tensioner pulley that keeps the correct amount of tension on your serpentine belt. When these bearings wear out, they can cause this type of a whistling sound that you describe. This is a quick fix and should not take much time with the proper tools. I would recommend having an expert from YourMechanic come to your home to diagnose and repair the car noise to ensure that this is resolved properly.

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: Car not changing gears

The transmission will most likely need to be replaced. I do not suggest driving the vehicle in this condition as serious engine damage will occur if the engine is redlined too much. A certified mechanic from YourMechanic can visit your...

Q: 2002 Buick LeSabre overheated and now won't start

Hi, Your engine most likely has major head gasket failure and possible oil pump failure also. Running for a long time with the oil light on could have caused major internal failure of the bearings if the light being on...

Q: SERVICE BRAKE SYSTEM message appears intermittently in the DIC.

Hi there. Before you have any repairs quoted or actually performed, the smart thing would be to diagnose the reason why you're receiving this error message. This would be done by having a professional mobile mechanic come to your location...

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 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...
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...