I recently purchased an Accord V6 Sedan. After a few weeks driving, I've noticed a strange sound that comes and goes. It's a very low droning noise which seems to happen between 35-40 mph. It goes away when you go above or below. I've noticed it when getting off of an exit and coasting at 35mph (no gas applied). What could it be? Any help would be great! Thanks.

Automatic Transmission

 

Tire noise?
Wheel bearing?

Swap your tires around to see if the sound moves to a different corner.

 

It does sound like tire noise..are your tires new with a lot of thread on them?

 

more like a humming noise right? does the sound amplify when maintaining or increasing the speed a little and turning the steering wheel left/right?

If that is the case, it's a wheel bearing. make sure you change the right one and ASK YOUR MECHANIC what brand he uses. if you know your parts, suggest him to get a brand you like or they'll slap a generic that'll last you 20-30k before the sound comes back.

 

Thanks for the replies. Yes, it sounds more like a humming sound; not metallic or grinding. The sound does not amplify with speed. In fact, it'll go away what's once I hit 40mph. It happens in range between 35 and 40. The car is brand new. The tires are brand new too. I would hate to think it's the bearings considering they should be new too. But, I guess I could have a bad one. Thanks again.

I haven't tried the left/right thing. Haven't found a safe stretch of road.

 

The sound is when it is in 3 cyl mode. It goes away cause below 30mph all 6 cyl are on and above 45mph 4 cyl mode is used. Any acceleration and it fires on all 6. There is a bulletin on them so check with Honda.

 

Thanks k24acura!

Is the noise normal? Or is something wrong with my Active Noise Cancellation?

Thanks.

 

its normal. I thought mine was too.

 

Thanks for all the replies. I'll just keep an eye out for any changes.