Skip the auto shop - Our mechanics make house calls

Q: on/off humming sound over 65mph

asked by on

I noticed a "humming" noise in a kind of off-on-off-on manner, when I drive over 65 mph it's like 1 second humming, 1 second off, 1 second, 1 off .... and so on. it has Firestones tires. I did alignment, bearing checking (no problems) balance and tire rotation, still didn't help. If the car on park and step on gas to high rpm no humming, its only happens when oh highways over 65mph, humming on/off will be in faster pattern, till I can't to notice it on 80mph I guess because the high road noise on that speed.
My car has an automatic transmission.

A: A "humming noise" while driving a...

A "humming noise" while driving at speed can be caused by tires or wheel bearings. If you drive with the window open and you hear the noise outside the car, like the sound bouncing back at you from a wall, highway divider, etc, then it’s most likely your tires.

Also, if you run your open palm across the tread surface of the tires and you feel a choppy pattern, like if you made a fist and ran your opposite hand across your knuckles, that’s another sign that the noise may very well be from the tires.

When driving with the windows closed, if you hear the noise change volume or pitch when say, changing lanes, then it it most likely one or more wheel bearing.

If you’d like to get this fixed, consider YourMechanic, as a certified technician can help you diagnose the source of the noise and make the necessary repair. 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: Noise coming from rear wheel area

This kind of hum sound generally comes from tires that may be out of balance or which need to be rotated; however, if you have just rotated them recently, this should not be an issue unless you have an odd...

Q: Rack and pinion

Was the power steering system flushed at the time of the service? Dirty fluid or a misalignment can cause the power steering pump to groan when turning the wheel. Return to the facility that performed the repair and have them...

Q: Wheel making noise

Bearing failure is common. Hub Bearings tend to make humming type noises as they start to fail. The noise usually gets louder or quieter during turning. This is because more or less stress is put on the bearing. In extreme...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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...