[V8] 91' V8 Automatic with vibration/noise

[Ed Kellock]

Bad engine mount?
Exhaust rubbing?
Does it do it only or more under acceleration load?
Have you checked the brakes?  Maybe a pad is dragging or crooked.
Does it have the ATE internal caliper braking system ("UFO brakes")?

My 1990 V8 will make a groaning sound when I'm turning at low speed and
braking at the same time like when I turn into a parking space.

Ed


-----Original Message-----
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf Of
Sports Car Workshop
Sent: Friday, March 20, 2009 3:12 PM
To: v8 at audifans.com
Subject: [V8] 91' V8 Automatic with vibration/noise


I have a 91' V8 automatic that has a very odd vibration and noise coming
from the front (more towards the left side). It is like a trumping sound,
not metallic. It only makes this sound going down the road (not on the car
lift) especially about 35 mph. We've replaced the left side half shaft, new
wheel bearing, drained and refilled the front diff, rotated wheels front to
back in case of bad wheel - we are at a loss of this vibration noise. Has
antone had a front diff carrier bearing go bad to know what it sounds like?
or a bad diff itself? Again, it isn't a grinding sound like you would expect
from a bearing. Any help greatly appreciated! Corey


Sports Car Workshop, Inc.
128 York St. Suite 1
Kennebunk, ME 04043
207-985-6661
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