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Old 08-06-2007, 03:10 PM
Dex Dex is offline
Just a Rookie Mechanic
 
Join Date: Mar 2007
Location: Dallas, Texas
Posts: 22
Mystery Front End Noise

If you enjoy a good mystery, have I the noise for you. As I accelerate my 1985 300SD normally through 45mph I hear a short, not terribly loud, squeal from the front end. I can hear a similar noise on both sides of the vehicle, though . The noise might occur again around 50 mph, then always again at 55mph. If I accelerate faster than normal the noise does not occur until I reach cruising speed an let of the gas a little. Just to make things more interesting, the squeal stops when I let off the accelerator. I have also tried revving up the RPM's in my driveway and I don't hear the noise. it only occurs when I am moving.

Here's what I have done so far, all to no effect (all of it was needed anyway):
New Front Rotors
New Front Bearings
Rebuilt Front Calipers
New Brake Pads
Flushed the brake lines
New tie rods
New Steering dampener

Anyone brave enough to try to solve this mystery should not assume I did any of the work correctly, since other than brake pads, all of it was a first time for me. The tire shop guys seem to think I installed the tie rods and steering dampners correctly though. So far I have completely avoided mechanics bills with this car and you guys are my last hope to keep that record alive.
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