Skip the auto shop - Our mechanics make house calls

Q: humming noise

asked by on

While on a road trip, my car began making a humming noise. Seems to get louder when at higher speeds, and started being louder when changing lanes or going around curves. All engine gauges in car are normal (oil pressure, temp, etc) The tires are in good shape with even wear. I keep up on all maintenance and repairs but we are 1000 miles from home at the moment and can't ask " Dr. BOb " (our car doctor) what's the scoop. I'm trying to think of all details. It is shifting nicely, All fluids are at the perfect levels. Sometimes I felt like maybe it was still revving a little high while driving even after I took my foot off the pedal. The pedal itself is not sticking at all, but it kinda feels like it's still getting gas after I stop giving it gas. When in park it idles and revvs up nicely, perfectly. This morning it started as soon as I started driving. Not upon starting the car but upon moving it, and it sounded like it was winding up. any help is greatly appreciated.

My car has 120000 miles.
My car has an automatic transmission.

A: It sounds like you have a wheel bearing goi...

It sounds like you have a wheel bearing going bad. Noisy wheel bearings will only make noise when the car is in motion. They will get louder the faster you go. They also change pitch, or get louder or more quiet when you turn right or left.

None of these symptoms will affect the drivability of the car. It sounds like you caught it early, so there is not an immediate need to get it fixed while you are on a roadtrip.

It is most likely one of the front bearings, the rear are lubricated by the differential oil. If you would like this repaired, or just a quote, consider YourMechanic, as a certified professional can come to the vehicle’s location to diagnose the sound you’re hearing. Good luck.

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

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 dies when stopping

Hi. There are many potential causes for the symptoms you are having. However, these vehicles are well known for having performance issues due to a dirty throttle body. Cleaning the throttle body with a dedicated cleaner may solve your problem....

Q: 2008 Mazda 5 has codes P0661 and P0720

Input from the vehicle speed sensor (VSS) is used by the transmission control module (TCM) to calculate shift points, torque converter operation and other transmission functions. Code P0720 stands for Vehicle Speed Sensor circuit malfunction. Typically, this code indicates a...

Q: With car off, exterior and interior lights start flashing

It sounds like somehow the anti theft system was activated and drained the battery. Try locking all of the doors from the inside and close them. Then lock, unlock, lock and unlock the doors to see if the problem persists....

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...