Humming vibration while decelerating

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Jun 5, 2013 | 07:28 AM

joeyb

Thread Starter

Pole Position

Joined: Feb 2002

Posts: 245

Likes: 5

From: NJ

Humming vibration while decelerating

I'm getting a vibration through the floorboards when I take my foot off the gas at high speeds. It has a low-pitched (like a subwoofer) hum to it. It's amplified when I go over dips and the suspension compresses, but doesn't exist when the car is in neutral. Any toughts?

(2009 LS, AWD, 120k miles, stock tires/wheels)

Jun 5, 2013 | 08:15 AM

CJITTY

Lead Lap

Joined: Jul 2010

Posts: 4,785

Likes: 154

From: The South

sounds like drivetrain issue with AWD setup

Jun 7, 2013 | 07:47 PM

I8ABMR

Lexus Fanatic

Joined: Sep 2007

Posts: 22,608

Likes: 105

From: Waiting for next track day

driveshaft would be my guess. There is a TSB on driveshaft vibration in the LS

Jun 21, 2013 | 03:50 PM

Iflylo

Driver School Candidate

Joined: Jul 2012

Posts: 9

Likes: 1

From: Va

Had the transmission mount on my 2009 AWD replaced for the same issue a few weeks ago. I have half the mileage so it was covered under warranty.

Jun 24, 2013 | 12:27 PM