1999 E430 Transmission surges or stumbles - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 04-21-2010, 07:48 AM Thread Starter
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Date registered: Dec 2008
Vehicle: 1999 Mercedes E430 Sport
Location: Enfield, CT
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1999 E430 Transmission surges or stumbles

Hi, I have a '99 E430 sport model which blew a transmission about 2 years ago. I had it replaced, and ever since, the transmission surges or stumbles at certain speed\rpm ranges. it happens a lot on the highway at around 60 mph. All of a sudden, the rpms will drop a couple hundred, and the car will buck, and then it goes back. I'm assuming its in top gear. If I drive faster, it doesn't seem to happen. I can cruise all day at 75 mph and its rock solid. I have messed with the throttle linkage near the master cylinder, and this does seem to have an effect on the way it shifts. I cannot get the behavior to dissapear completely. I know this sounds strange, but It almost never displays this behavior in the morning on the way to work, but is quite evident on the way home. I figure both trips are starting out with cold engines and transmissions. Not sure, but if anyone has heard of this and knows what it is please let me know.

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post #2 of 2 (permalink) Old 04-21-2010, 08:54 AM
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First off you have a W210 and we have a dedicated forum, look in the sedans section. There are several quite knowledgeable transmission guys there who most likely will not see this post in the general forum. There are also some DIY stickys dealing with transmission issues. Good luck and welcome to BW.

p.s. These 722.6 transmissions are shared by a few other MB classes so I'd leave this thread alive here (don't delete it in other words) since someone might see it and reply.

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Last edited by Musikmann; 04-21-2010 at 08:57 AM.
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