Skip the auto shop - Our mechanics make house calls

Q: Thrumming and vibration under feet when driving

asked by on

Last week I noticed that my car started to have a thrumming noise and a vibration under my feet when driving over the speed of about 20 mph. It's a constant noise that doesn't speed up or slow down when driving. I just had maintenance done as well as a tire rotation and the dealership didn't say anything about having anything wrong with the car but the vibration still persists. It tends to stop when I break to a slower speed of about 15-0 mph. A better way to describe the noise I am hearing is you know when a Harley motorcycle passes your car and you get this vibration and sound? That's what it feels and sounds like. It's when I first noticed it thinking there was a motorcycle driving near by only to find out there was not one in sight.

My car has 31000 miles.
My car has an automatic transmission.

A: Hi, thanks for writing in. The noise and vi...

Hi, thanks for writing in. The noise and vibration you sense could be engine vibration passing direction directly into the body of the car. This normally should not occur, but it can happen when engine mounts or a transmission mount get weak or fail. The engine can shift when it's under a load, and some part of the engine or exhaust touch the chassis of the car - the chassis actually amplifies the vibrations - sounds and feels as though "something" is coming through the floor. I would recommend having YourMechanic.com perform a "Car is making a noise" inspection to diagnose these symptoms, and estimate the cost of repairs. YourMechanic.com can dispatch a mobile, professional mechanic to your location for diagnosis and repairs.

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・Save up to 30%

Get a quote

What others are asking

Q: Why does my 2013 ford fusion keep shutting off

Hello there, many different faults will cause your 2013 Ford Fusion to stall and shake. The most likely causes are the spark plugs, fuel pump, coils, wiring harness fault, vacuum leak, or oxygen sensors. This vehicle needs diagnosed fully to...

Q: What does the tail light indicator mean?

The tail light indicator is located on the instrument panel. This light illuminates when the tail lights are turned on.

Q: Car is making a speed related sound over 20mph almost like something is dragging or rubbing. 2008 Subaru Outback

Hi there - quite likely, this is a wheel bearing noise. Your own diagnostics actually narrow it to this "speed-related, but not while shifting (accelerating)" - well done! The bearing might not make noise while suspended - because it isn't...

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 to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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.