Humming Noise
Thread Starter
Burning Brakes
Joined: Feb 2005
Posts: 770
Likes: 9
From: Darien, CT
Humming Noise
Took my '06 997S for a nice drive today. I'd been driving about 50 miles or so when I started to notice that the car made a "humming" noise when turning left on the freeway. It doesn't happen every turn, but it would do so pretty regularly. Other than the fact that it harmonized nicely with the PSE from time to time (depending on the RPM!), it's got me a bit worried. All my temperatures and pressures were normal and my oil level was fine.
I'm going to take the car to the dealer, but would appreciate any opinions as to what might be causing this noise. Thanks.
I'm going to take the car to the dealer, but would appreciate any opinions as to what might be causing this noise. Thanks.
Track Day
Joined: Mar 2019
Posts: 19
Likes: 1
Did this get solved?
09 997.1 TT 63k mi. Have similar noise turning left, lightens up turning right. Noise comes around 40mph then goes away (or less noticeable) after about 60 but back after 75. More pronounced turning left, lightened turning right. But persists even when going straight.
Have replaced right front bearing, didn't fix it. Did right hand shaft too so CV joints are new. Didn't fix it. What else could it be? Drive shaft bearing would make such noise ?
Have replaced right front bearing, didn't fix it. Did right hand shaft too so CV joints are new. Didn't fix it. What else could it be? Drive shaft bearing would make such noise ?
Took my '06 997S for a nice drive today. I'd been driving about 50 miles or so when I started to notice that the car made a "humming" noise when turning left on the freeway. It doesn't happen every turn, but it would do so pretty regularly. Other than the fact that it harmonized nicely with the PSE from time to time (depending on the RPM!), it's got me a bit worried. All my temperatures and pressures were normal and my oil level was fine.
I'm going to take the car to the dealer, but would appreciate any opinions as to what might be causing this noise. Thanks.
I'm going to take the car to the dealer, but would appreciate any opinions as to what might be causing this noise. Thanks.
Rennlist Member
Joined: Nov 2009
Posts: 3,162
Likes: 537
From: PNW
My first thought is wheel bearing. I've also heard of tread separation making a similar noise. How are your tires? They can look fine but under the stress of turning the tread can wiggle. If it's not the bearing, swap front tires around and see of the noise moves with it.
Three Wheelin'
Joined: Feb 2017
Posts: 1,965
Likes: 689
From: San Francisco
+1 on wheel bearing. I never had it on the 997 but my Land Rover did the same thing. I thought I had uneven wear on my right front tire but found a scary amount of play in the right front bearing. Your right front bearing will make a noise if turning to the left at highway speed and vice versa. Jack it up and try to wiggle the tire to check for play.
Pro
Joined: Dec 2017
Posts: 657
Likes: 98
From: Arlington, Texas
Took my '06 997S for a nice drive today. I'd been driving about 50 miles or so when I started to notice that the car made a "humming" noise when turning left on the freeway. It doesn't happen every turn, but it would do so pretty regularly. Other than the fact that it harmonized nicely with the PSE from time to time (depending on the RPM!), it's got me a bit worried. All my temperatures and pressures were normal and my oil level was fine.
I'm going to take the car to the dealer, but would appreciate any opinions as to what might be causing this noise. Thanks.
I'm going to take the car to the dealer, but would appreciate any opinions as to what might be causing this noise. Thanks.
