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Old 01-09-2002, 10:40 AM
G-Benz's Avatar
G-Benz G-Benz is offline
Razorback Soccer Dad
Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
I don't think you have a transmission fact, short of unbelievably poor maintenance, MB trannys are pretty solid units.

The "bucking" you are experiencing is happening on idle, and has been described by others as a "surging". Search for "surge" or "surging" on this forum.

I have this problem right now on my 300E...usually worse when its warm (almost non-existent when cold). Haven't taken the time to research it much, but I have gotten responses on my threads indicating it could be a bad switch on the transmission shift column sending error codes to the computer. Also, the temperature sensor is a possible cause (hmmm, maybe that's why it's not so prevalent in cold weather).

I will one day get this fixed and post the results to all, but for your situation, I just wanted to point out that your tranny is just fine, and to look elsewhere for the problem...
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
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