S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

Loud bumping noise when are moves from a stop 1993 w140

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Old Sep 25, 2005 | 08:48 PM
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snair11's Avatar
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Loud bumping noise when are moves from a stop 1993 w140

Hey all, I need some help.

In my '93 w140, from a stop to a go, or slowing down to a stop, there is a really loud bumping noise. I took the car to a local mechanic, and he lifted the car up on the lift, and had me put the car in drive in air as he examined the drivetrain. Afterwards, I get down and he shows me the possible problem, there is some rubber peice which connects the driveshaft or whatever, and it is cracking or just broken. I have no real idea about the terms on the car, or what is really wrong with the car, but I was wondering if anyone knew what i looked at and tell me what this peice is, and how much it'll cost to fix. Sorry for being so bleak, but i have no idea what i looked at...
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Old Sep 26, 2005 | 01:54 PM
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brett san diego's Avatar
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1997 S600 Sedan
Probably the flex disc, a rubber coupling between the

transmission output shaft and the driveshaft. It's a fairly common wear item in older higher-mileage cars. It's rubber, and it will disintegrate eventually. Your mechanic didn't quote you a repair cost? www.autohausaz.com has a kit for the replacement for $76 (for a 97 S600, my car).

https://www.autohausaz.com/memberson...TOKEN=89048593

The job may involve a lot of extra labor costs, however, because the rear exhaust system may have to come off (at least that's what it looked like to me when I was under my car a lot recently).

Brett

Last edited by brett san diego; Sep 26, 2005 at 01:58 PM.
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