Go Back  MBWorld.org Forums > Mercedes-Benz Sedans > E-Class (W212)
W212 Vibrations in high gear or when Revving, Driving me Insane >

W212 Vibrations in high gear or when Revving, Driving me Insane

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

W212 Vibrations in high gear or when Revving, Driving me Insane

 
Old 03-13-2018, 10:18 AM
  #1  
Newbie
Thread Starter
 
Join Date: Mar 2018
Posts: 4
Liked 0 Times in 0 Posts
2010 E350 v6 Sedan
Unhappy W212 Vibrations in high gear or when Revving, Driving me Insane

Hello fellow Benz connoisseurs

I'm in a bit of a pickle and i cant figure out what the issue is, so figured id come here and ask all you smart people to help me diagnose my problem.

My 2010 E350 vibrates when in last gear (Gear 7) at high speeds, under load, (over 60mph, appx 2,500rpm) throughout the body of the car. All passengers can feel it in their seat. When i throw it in neutral while at those speeds, the vibration stops, and when i lower the gear (any gear lower than 7) the vibration also stops as it revs higher. When parked and I rev the engine (about 3 - 3,500rpm) it also vibrates. My brother seems to think its the Harmonic Balancer, but there is no way to diagnose it without buying the new part, installing, and seeing what happens.

All the other gears at the lower speeds don't vibrate like that, hence the cause for concern. The vibration is like a rhythmic, pulsing feeling. Like waves? Hope that makes some sense.

So my questions are:
  1. Is it possible that the last gear is somehow damaged in the transmission? (Gosh i hope not)
  2. Could it really be the harmonic balancer?
  3. Long shot but, could it be the wheels? (Tire shop told me i had bent rear wheels when i did my alignment and balancing) Although that wouldn't explain why it happens only in Gear 7
Thanks again everybody!

Please help put my mind at ease

Last edited by xflair89; 03-13-2018 at 10:22 AM.
xflair89 is offline  
Old 03-13-2018, 11:04 AM
  #2  
MBWorld Fanatic!
 
KEY08's Avatar
 
Join Date: Oct 2005
Location: Chicagoland
Posts: 3,308
Liked 363 Times in 340 Posts
2014 E550 4Matic Designo Diamond White and loaded up
Gear 7 at 2.5K rpm it shakes and when sitting and revving to 3K rpm, so how can you put the blame on the transmission? Could be your motor mounts are completely shot since it does it while you are sitting still. Maybe your drive shaft is also out of whack causing the shake at speed. Bent wheels also really affect these cars at speed. These E Class cars are designed to go 140mph all day on the Autobahn with no drama. How many miles are on your car? Are you the original owner with all service records, so you know what has been replaced?

Last edited by KEY08; 03-13-2018 at 11:09 AM.
KEY08 is online now  
The following 2 users liked this post by KEY08:
raja777m (03-13-2018), xflair89 (03-13-2018)
Old 03-13-2018, 11:40 AM
  #3  
Newbie
Thread Starter
 
Join Date: Mar 2018
Posts: 4
Liked 0 Times in 0 Posts
2010 E350 v6 Sedan
Gear 7 at 2.5K rpm it shakes and when sitting and revving to 3K rpm, so how can you put the blame on the transmission?
The only reason I felt it could be a transmission issue is because of its strange behavior of only happening in a specific gear When sitting and revving, the vibrations aren't as severe as when moving, so that was a wild guiess

Could be your motor mounts are completely shot since it does it while you are sitting still.
I also thought this too, but when motor mounts go bad, doesn't the engine dramatically shift over when revving? Like lifts off one side? Mine doesn't seem to be doing anything that crazy.

Maybe your drive shaft is also out of whack causing the shake at speed.
This is an interesting one... Hadn't thought of it. That would suuuuck

Bent wheels also really affect these cars at speed
This is true, but the specific gear thing kinda disregards it. Coasting at high speed reducing the vibrations, so its only when in gear.

The car is aging fast though, now at 120k miles. I don't know what all has been replaced on it though, im the second owner
xflair89 is offline  
Old 03-13-2018, 03:30 PM
  #4  
Mud
Super Member
 
Mud's Avatar
 
Join Date: Oct 2014
Posts: 852
Liked 161 Times in 130 Posts
2011 E-350 4Matic Sport
Motor mounts that have actually separated can allow the engine movement you described but if I remember right the mounts in these cars have hydraulic fluid in them? If the fluid has leaked out then I believe you would experience vibration from the lack of dampening.
Mud is online now  
Old 03-13-2018, 03:39 PM
  #5  
MBWorld Fanatic!
 
KEY08's Avatar
 
Join Date: Oct 2005
Location: Chicagoland
Posts: 3,308
Liked 363 Times in 340 Posts
2014 E550 4Matic Designo Diamond White and loaded up
Originally Posted by Mud View Post
Motor mounts that have actually separated can allow the engine movement you described but if I remember right the mounts in these cars have hydraulic fluid in them? If the fluid has leaked out then I believe you would experience vibration from the lack of dampening.
Yes, they are hydraulic oil filled mounts and they have a history of failure or lasting less than one may expect. Your car has 120,000 miles. If you can't get records of prior service, get the car on a lift and check out the mounts. I would start there. It will shake at speed and will shake while parked as well.
KEY08 is online now  
Old 03-13-2018, 05:26 PM
  #6  
Super Member
 
kbob999's Avatar
 
Join Date: Jul 2014
Location: Battle Ground, WA
Posts: 737
Liked 111 Times in 103 Posts
All my cars are blown! '11 E350 Diesel P2 Sport; '03 SL55 AMG Pano
FYI - the motor (and trans) mounts on my AMG's lasted only about 80K miles. At 120K, I would bet that is your issue.
They don't separate, but settle the engine in the frame so it is 'bone on bone'.

I've done both of mine DIY, and I'm sure others have done the W212 here. My W212 will probably need them in a year or 2. Best done with a lift, and with a floor jack to lift the engine (one side at a time).
Probably a 4 or 5 on a scale of 10 for difficulty. One special 16mm wrench is required to remove the bolt from the top of the mount.
Otherwise it's just 2 bolts to remove and replace them. Might have to drop exhaust to pull the mounts from the back. Search the forum for this.

Keep us posted on the outcome.
kbob999 is offline  
Old 03-13-2018, 05:50 PM
  #7  
Mud
Super Member
 
Mud's Avatar
 
Join Date: Oct 2014
Posts: 852
Liked 161 Times in 130 Posts
2011 E-350 4Matic Sport
I should have added that engine and transmission mounts were replaced on my car under warranty, I think it was around 30k miles.
Mud is online now  
Old 03-16-2018, 08:59 PM
  #8  
Senior Member
 
Join Date: Apr 2003
Location: Northeast
Posts: 258
Liked 17 Times in 16 Posts
2011 E350 4Matic
I had a vibration in mine in high gear at around 40-50 MPH. Changing transmission fluid solved it, but I did not have issues in neutral.
300SE1993 is offline  
Old 03-16-2018, 11:18 PM
  #9  
MBWorld Fanatic!
 
ItalianJoe1's Avatar
 
Join Date: May 2015
Location: Miami, FL
Posts: 3,529
Liked 682 Times in 568 Posts
2003 CL 600
Motor mounts and trans mount, replace them and you won't believe how smooth it gets. They collapse with age, I normally see them at 30-40k miles they are bad enough to feel, they will be almost a 1/2" shorter than the new ones when you take them out. Cheap/simple repair too unless it's a 4-matic, which isn't bad just takes more time.
ItalianJoe1 is offline  
Old 04-12-2018, 05:32 PM
  #10  
Newbie
Thread Starter
 
Join Date: Mar 2018
Posts: 4
Liked 0 Times in 0 Posts
2010 E350 v6 Sedan
I had a vibration in mine in high gear at around 40-50 MPH. Changing transmission fluid solved it, but I did not have issues in neutral.
I'm actually going to flush out my transmission next week. Will report back on how much it dampens my vibration issues


Motor mounts and trans mount, replace them and you won't believe how smooth it gets.
I'm also going to change out my transmission mount, seems to be the easiest to get to, and see how that works out

Otherwise it's just 2 bolts to remove and replace them. Might have to drop exhaust to pull the mounts from the back. Search the forum for this.
Can't really seem to find a good step by step tutorial on the Pre-Facelift w212 to get the Motor mounts out. Just found the Tranny Mounts Tutorials though. Mind lending a hand in finding this?
xflair89 is offline  
Old 04-12-2018, 06:40 PM
  #11  
MBWorld Fanatic!
 
belarus27's Avatar
 
Join Date: Jun 2013
Location: Sacramento , CA
Posts: 1,787
Liked 151 Times in 142 Posts
2010 e550 p2
I had intermittent vibrations at 65-70 mls hour , come and go , couldnt figure out what that was... alignments , new tires , most of the suspension parts are new as well.
until i got my transmission fluid and mount changed last week.
Cant feel those vibrations anymore.
i just changed one mount on trans... i would suggest to do a fluid change and both tranny mounts while u at it though.
belarus27 is offline  
Old 04-12-2018, 08:22 PM
  #12  
Senior Member
 
Join Date: Apr 2003
Location: Northeast
Posts: 258
Liked 17 Times in 16 Posts
2011 E350 4Matic
Originally Posted by xflair89 View Post
I'm actually going to flush out my transmission next week. Will report back on how much it dampens my vibration issues



I'm also going to change out my transmission mount, seems to be the easiest to get to, and see how that works out


Can't really seem to find a good step by step tutorial on the Pre-Facelift w212 to get the Motor mounts out. Just found the Tranny Mounts Tutorials though. Mind lending a hand in finding this?
Someone posted one on here a while back. If you do some searching around, you should be able to find it. Also, I did a drain and fill (pan and torque converter) with filter change. I did not do a "flush".

Originally Posted by belarus27 View Post
I had intermittent vibrations at 65-70 mls hour , come and go , couldnt figure out what that was... alignments , new tires , most of the suspension parts are new as well.
until i got my transmission fluid and mount changed last week.
Cant feel those vibrations anymore.
i just changed one mount on trans... i would suggest to do a fluid change and both tranny mounts while u at it though.
There's one transmission mount, and two motor mounts.
300SE1993 is offline  
Old 04-13-2018, 12:32 AM
  #13  
Junior Member
 
Join Date: Mar 2018
Location: Connecticut
Posts: 22
Likes: 0
Liked 6 Times in 6 Posts
2013 E350
I had an issue like that with a Mustang. It vibrated at a certain RPM but not above or below it. The problem was the harmonic balancer. The indy shop had a used one that they gave me for free and installed for a very small charge. I don't know how difficult it is to replace the part on an E350. RockAuto sells one for about $260 for an E350.
Kilt is offline  
Old 04-22-2018, 09:42 AM
  #14  
Newbie
Thread Starter
 
Join Date: Mar 2018
Posts: 4
Liked 0 Times in 0 Posts
2010 E350 v6 Sedan
Smile Solved

Ladies and gentlemen, my issues have been resolved!

So after a lot of driving, this forum post, and paying attention, I narrowed it down to my front wheel bearing, bad. tranny oil, and transmission mount! I was pretty sure the engine mounts were okay because I did the engine load test (putting car in drive, foot on brake, and checking amount of play the engine had when I press the accelerator). Also a tip, bad engine mounts can be felt when you put your hands on the engine and rev it. Tranny mount is bad when the engine doesn't vibrate, but you feel the vibration under the car / floor of car while you rev and sitting in it.

The wheel bearing caused a rumbling / grinding-esque feel to the car. After jacking up the car and spinning the wheel, the brake disk slightly wobbled, but those were new, so figured it was the bearing. /looking at it now, it was for sure the factory one, so I replaced that. The wheel had no more grinding and wobble:



w212 bad bearing


Then I replaced the tranny mount. 5 bolts total, super easy job. A little tricky if the tranny shifts a bit when I jacked it up, and lining up the holes but done in 45mins. The mount was definitely collapsed, and had cracks all over it. This one mad the biggest difference



w212 collapsed tranny mount

Lastly, I did a transmission fluid change, filter change, and gasket change! Now it shifts like a dream! No hesitating shifts, slow shifts, nada. Just how a w212 should feel!

Thanks for all the posts here, helped me a lot! Hope this helps someone in the future!
xflair89 is offline  
Old 04-22-2018, 01:07 PM
  #15  
MBWorld Fanatic!
 
KEY08's Avatar
 
Join Date: Oct 2005
Location: Chicagoland
Posts: 3,308
Liked 363 Times in 340 Posts
2014 E550 4Matic Designo Diamond White and loaded up
You are to be commended for coming back and providing your detailed solutions. Bravo, sir!
KEY08 is online now  
 

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

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:

Quick Reply: W212 Vibrations in high gear or when Revving, Driving me Insane


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: