E-Class (W212) 2010 - 2016: E 350, E 550

Vibration at idle (not mounts)

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Old 06-15-2024, 09:02 AM
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Mercedes e350 2015
Originally Posted by stf1993ire
I have same problem anyone can help with it
E350 2015
Old 06-16-2024, 08:00 AM
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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
How To Diagnose Your Mercedes Idle Vibration | FCP Euro
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Old Yesterday, 07:54 PM
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Mercedes e350
Originally Posted by youchillinornah
First sorry for the dumb name made it when I was younger. I have 2010 E350 4matic with 116k miles and I have a vibration at idle that I cannot fix. I changed all 3 mounts didnt really help. I got it checked for vacuum leak and apparently there is none. I just changed the spark plugs with bosch double platinum, mann air filter, and fresh mobil 1 oil change. The engine is clearly vibrating and it gets worse when its cold and worse when in gear. It only vibrates at idle ~550-600 rpm so at start up when idle is high no vibration but once it goes down it starts vibrating and when I put it in gear and it drops even more the vibrations get worse. If I give it some gas and raise it to like 700 smooth as butter. While driving around its smooth. I feel a little of hesitation when accelerating at ~3-4k rpm but only at partial throttle and for a little bit. I checked MAF by unplugging it and starting it up and it still was vibrating. NO CEL and NO codes. When the engine gets warm it gets alot better sometimes goes away depending on how long its been running and how warm it is out. I tried one bottle of techron and only use 93. I also get a vibration coming from the engine/under the dash area Im assuming from like where the trans connects when I turn the wheel when my car is at idle and its cold. Gets better/ goes away when engine is warm. This doesnt happen at low speeds just when stopped I dont have any issues with turning while moving or anything like that its just at idle when cold. Thanks for any help.
I have same problem I did find any code or anything
Old Yesterday, 07:59 PM
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MY'14 W212 M276 3.5NA @55kMi
Originally Posted by Isufpodo95
I have same problem I did find any code or anything
what scanner found no code?
Old Yesterday, 08:33 PM
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'99 and '05 E55 AMG
A dirty EGR valve can cause this issue. Valve fails to close at idle and the exhaust dilutes the idle mixture causing misfires. Inexpensive repair.

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