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

Vibration at idle (not mounts)

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 06-15-2024, 09:02 AM
  #51  
Newbie
 
stf1993ire's Avatar
 
Join Date: Jun 2024
Posts: 2
Received 0 Likes on 0 Posts
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
  #52  
MBWorld Fanatic!

iTrader: (1)
 
JettaRed's Avatar
 
Join Date: Nov 2016
Location: Maryland, United States
Posts: 4,778
Received 1,725 Likes on 1,278 Posts
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
The following users liked this post:
juanmor40 (06-16-2024)
Old 06-30-2024, 07:54 PM
  #53  
Newbie
 
Isufpodo95's Avatar
 
Join Date: Jun 2024
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
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 06-30-2024, 07:59 PM
  #54  
MBWorld Fanatic!
 
CaliBenzDriver's Avatar
 
Join Date: Apr 2019
Location: Silicon Valley
Posts: 5,860
Received 3,587 Likes on 2,389 Posts
MY'14 W212 M276 3.5NA @60kMi
Originally Posted by Isufpodo95
I have same problem I did find any code or anything
what scanner found no code?
Old 06-30-2024, 08:33 PM
  #55  
MBWorld Fanatic!

 
bbirdwell's Avatar
 
Join Date: Jan 2014
Location: Republic of Texas
Posts: 3,353
Received 996 Likes on 775 Posts
'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.
Old 07-04-2024, 12:20 PM
  #56  
MBWorld Fanatic!
 
nc211's Avatar
 
Join Date: Jun 2017
Location: Washington, DC
Posts: 1,102
Received 657 Likes on 409 Posts
2020 GLS450 / 2024 Ford Bronco / (former) W212 4-matic 350 sport package
Don't know if OP fixed it (haven't read all of the posts), but from his opening description, makes me think the PCV valve (may be saying the same thing as bbirdwell above). It's in the back of the engine against the firewall and not very easy to get to. I had mine replaced around 65k miles (mine also had new mounts, fluids, plugs, filters, etc...very well maintained). I didn't really have a lot of symptoms, just kind've wanted to get it replaced. The result was very noticeable in smoothness of the engine at idle, the ease of it starting, and quietness. Won't say night/day because mine was running fine already, but after the new PCV went in, it was running like it was brand spankin' new off the factory floor. Veeeerrryyyy smooth.. For example, before when I'd start it, it would idle at higher rpms like you would expect to warm up. After it was replaced, it would immediately start up and sit at lower rpms, like it was breathing better and didn't need to rev harder. Also went into gear initially much smoother too. Just kind of floated into drive on a cold engine instead of that faint "lurch".

Cost about $700 at my Indi to do because of the process to actually get to it to replace it.

Last edited by nc211; 07-04-2024 at 12:22 PM.
Old 07-05-2024, 05:35 PM
  #57  
Senior Member
 
retna7's Avatar
 
Join Date: Jul 2006
Location: Alexandria, VA
Posts: 275
Received 75 Likes on 52 Posts
2000 E430 Sport
M273 engine misfires at idle.

Replaced:

Ignition Coils 2019
Spark Plugs 2019

Camshaft Adjusters 2022
Fuel Pump 2022
Fuel Filter 2022
Intake Manifold Gasket 2022
Decarboned Intake 2022
Fuel Injectors 2022
Knock Sensors 2022
PCV Vent Valve 2022
Motor Mounts 2022
Transmission Mount 2022

Air Pump Control Valves 2024
Oil Centrifuge (Drip Pan) 2024
PCV Oil Separator 2024


No codes and drives well outside idle with a cold start. Idle seems fine once warm.

Cleaned the MAF but may need to be replaced.

Could be OE Tune affecting timing so I'll be contacting customer service for removal instructions.

Have no idea what else it could be:

Cold start after a few days:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Vibration at idle (not mounts)



All times are GMT -4. The time now is 01:44 AM.