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  #1  
Old 07-23-2004, 02:54 PM
Peyton300TD's Avatar
S124 owner
 
Join Date: Apr 2002
Location: Marina Del Rey, CA
Posts: 1,059
flutter noise in reverse 1993 300E

When I am in reverse I hear a flutter noise that increases as i put the gas on. The car also surges a little bit (not rpms) as it backs up. Any idea what this could be?

1993 300E 3.2
156,000 miles
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Old 07-23-2004, 05:48 PM
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Join Date: Jul 2004
Posts: 43
re: transmission noise

Peyton300D,

Attached below is a post I did to another M-B forum, containing a pointer to a useful reference document on 722.3 - 722.5 transmissions. Although it is for 1995-96 models, my guess is that something very close to your transmission is described. In the early part of the .pdf file, there is a symptoms/diagnosis section that might help

Bob Schleicher

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During my digging into my own W126 transmission problem (no reverse gear engagement - since solved via B3 reverse clutch repair), I Googled the keywords 722.3, Mercedes, transmission, and repair, and found the following .pdf file:

http://w126.pp.ru/akp722.pdf

The web site it is on is some form of Russian W126 site (with cyrillic text), but the document itself is in English. It covers the transmissions used in 1995 and 1996 models, but several models of these years use 722.3xx transmissions, and so the info on diagnosis is reasonably valid for W126 models. I wouldn't want to use these for actual repair procedures, but it certainly can help you to understand the possible causes of most symptoms.

I have no idea if the web site that this is from had permission to post this document - it just came up via Google.

Bob Schleicher
1991 420SEL - 171,000 miles.
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