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2013 E350 Facelift (Japan Import) 2007 E350 Elegance Wagon, 2014 E350 Wagon facelift model Jap Model
Drive line vibration at around 2000rpm?
Hi guys,
One of our 2014 E350 wagons has a bad vibration at around 2000rpm and worsens as you load up the driveline with higher and higher gears, it's especially bad when starting out cold.
Anyone else experienced this before, it's like a balancer is out of whack or the torque convertor is having an issue...just wondering if some one else has seen this before?
One of our 2014 E350 wagons has a bad vibration at around 2000rpm and worsens as you load up the driveline with higher and higher gears, it's especially bad when starting out cold.
Anyone else experienced this before, it's like a balancer is out of whack or the torque convertor is having an issue...just wondering if some one else has seen this before?
Cheers!👍🏻
Are you feeling it when sitting still and revving the engine to 2,000? Or are you moving and notice it when it hits 2,000?
If moving, can you hold each gear at 2,000 and feel it, or are you more like going 80mph and feel it while at 2,000 in 7th gear?
if sitting still, then i would say motor mounts.
if moving, then it could be a laundry list of things, from a bent wheel, to a bad flex disc on the driveshaft. No way to tell without putting it up on a rack.
2013 E350 Facelift (Japan Import) 2007 E350 Elegance Wagon, 2014 E350 Wagon facelift model Jap Model
Originally Posted by nc211
Are you feeling it when sitting still and revving the engine to 2,000? Or are you moving and notice it when it hits 2,000?
If moving, can you hold each gear at 2,000 and feel it, or are you more like going 80mph and feel it while at 2,000 in 7th gear?
if sitting still, then i would say motor mounts.
if moving, then it could be a laundry list of things, from a bent wheel, to a bad flex disc on the driveshaft. No way to tell without putting it up on a rack.
Thanks mate, it's only when moving and always around that same RPM, we'll get it in the air and see what's amiss,
My thought is motor mounts (and transmission mount while you’re at it). At 2k you’re getting into the torque band, and it’s likely shifting the engine a bit too much. If it gets too out of line, it puts additional stresses on the other driveline components (like the flex discs that are connected to the end of the driveshaft). Transmission mount is an easy one to replace. If you’re 4Matic, the motor mounts are a bit more challenging to navigate around.
Do this: pop the hood, have a buddy hold the brake and then shift it into gear. Watch the motor, is it shifting around a good bit? Put it in neutral and rev it quickly, watch the engine if it’s shifting back and forth in excess.
the mounts aren’t a strong point on the 212. They typically will last around 5 years before they start to sag a bit. I replaced mine around year 5 of the cars age and 45,000 miles. On mine, on a gentle pedal, shifting into 5th from 4th, I’d hear a split second rumble throughout the entire frame of the car under my seat. Culprit - the mounts. They had compressed so much that when that shift would happen, it would cause a split second where the transmission mount was twisting to a side via the torque of the engine and causing the metal to metal contact to vibrate. New mounts fixed it all. It’s been almost 3 year now and has been fine ever since.
2013 E350 Facelift (Japan Import) 2007 E350 Elegance Wagon, 2014 E350 Wagon facelift model Jap Model
Originally Posted by nc211
My thought is motor mounts (and transmission mount while you’re at it). At 2k you’re getting into the torque band, and it’s likely shifting the engine a bit too much. If it gets too out of line, it puts additional stresses on the other driveline components (like the flex discs that are connected to the end of the driveshaft). Transmission mount is an easy one to replace. If you’re 4Matic, the motor mounts are a bit more challenging to navigate around.
Do this: pop the hood, have a buddy hold the brake and then shift it into gear. Watch the motor, is it shifting around a good bit? Put it in neutral and rev it quickly, watch the engine if it’s shifting back and forth in excess.
the mounts aren’t a strong point on the 212. They typically will last around 5 years before they start to sag a bit. I replaced mine around year 5 of the cars age and 45,000 miles. On mine, on a gentle pedal, shifting into 5th from 4th, I’d hear a split second rumble throughout the entire frame of the car under my seat. Culprit - the mounts. They had compressed so much that when that shift would happen, it would cause a split second where the transmission mount was twisting to a side via the torque of the engine and causing the metal to metal contact to vibrate. New mounts fixed it all. It’s been almost 3 year now and has been fine ever since.
Many thanks for your clearly written explanation and way to diagnose the possible cause, its much easier to understand than just posting a single word...?
Ha! Yeah sorry I was in a rush. If you are driving and the vibration is felt around you like the car is shaking apart, but there is no vibration felt through the steering wheel, then the axles are suspect. It’s a weird sensation to describe, but once it happens and the diagnosis is a bad axle you will always remember it.
Engine mount is quite easy to see if it is sinking.
I am an engine mount-holic , 20,000KM I replaced them both and tranny mount.
My 20,000KM has lots of bad roads and the way I drive would equal 60,000KM of a typical country with good highway system, say USA and driver has an "egg" under his throttle pedal.
Depending how the angle you view the engine mount, because parallax error can result in tiny different assumption of the sinking depth of the middle part of the engine mount vs the round body.
Observe the pink zone at 2nd image , that is easy to see virgin engine mount and a bit sinking one.
18,000KM vs new one
Below is my friend's C200 W204 of 71,000KM and model year 2010, so engine mount age 11 years when photo taken in 2021.
I can only photo with ease the LEFT one. But you will see how obvious the sinking.
At this sinking depth, this is a brutal !!!
While under the car, check your tranny mount, it is easy to see and verify.
Below is also from my friend C200 W204. This one is sinking too. This one so easy to replaces and cheap too.
=================================
MY TRANNY MOUNT
For my tranny mount, I will replace it about the same time as engine mounts.
Below I replaced a bit ealier, like 13,227KM service life or so and the sinking is this much already.
RIGHT ONE IS NEW
Tranny mount has very little room to play.
See below : The old one vs new-2020, so little difference to naked eye because not under compression.
Look at the allowable movement room at the bottom of the mount, so little.
From my log book. 2018 is when I got the car, in May and only 9,700ish KM. So OE engine mount by age is already 4 years 2 months when I first replaced in Aug 2018.
Car is 2014 June registered by first owner. Time is enemy for engine mounts because forever it is under compression, with mileage or not, they still suffer.
When later you replaced the engine mounts, benchmark it at how your steering wheel ONLY gets super super minor vibration at idle IF NEW MOUNTS.
When engine mounts starts to age a bit, the vibration at steering wheel at idle will increase a tiny bit. This is well before it will send any strong vibration.
If the steering wheel at idle, vibrate like a 4 cylinder engine under 2 liter and a front wheel drive, that is too much vibration already.
Happy troubleshooting................
Last edited by S-Prihadi; Nov 29, 2022 at 03:32 AM.
Reason: typo
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, 20,000KM I replaced them both and tranny mount.
