Vibration in D & R at idle (All mounts done)

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Mintyfresh77

Member
Joined
Oct 17, 2021
Messages
43
Location
Southampton
Car
S211 E220 CDi OM646 Evo
I know vibration threads have been done to death and all fingers normally point at engine or trans mount but this doesn't fit the usual criteria so looking for any out of the box thoughts or suggestions (hate that phrase but it's applicable here).

2009 S211 OM646 220 cdi 5spd Auto with currently about 129k on the clock. Great history pre and post sale to me in 2021.

So Transmission oil & filter change done at Merc indy in late 2021 because I had just purchased the car and it hadn't been done yet, then new Lemforder engine and transmission mounts fitted in July 2022 as the car was at 125k on originals and the merc specialist health check had mentioned they were worn. All mounts changed and didn't notice any real difference to be honest but at least they were ticked off the to do list.

By September 2022 I was noticing excessive vibration of the interior plastics and a noise like you would get if an exhaust wasn't fitted properly and vibrating against the underside of the car. Only happens while stationary if you select D or R. When stopped at traffic lights it's so annoying to me that I put it in neutral but here's the thing....this only happens in the first 30 minutes of running the car, get it nice and hot on a run and the problem totally dissappears.

Injectors all replaced (brand new) and various other fuel system components when trying to zero in on a rough idle issue last year but still this problem remains. Now here's something that maybe something or nothing...my wife mentioned it took a few cranks to fire up the other day, hooked up the code reader and it stated a historic EGR 20A3 but when I inspected the EGR last summer it was amazingly clean (non DPF car).

So is this potentially transmission, prop/bearing related or downstream effect of perhaps intake manifold/EGR shenanigans? Or none of the above?

I have been underneath and looked for unwanted contact points between exhaust and body (nada) I loosened all the exhaust fitting bolts and retightened in the hope it hadn't settled since the mounts were done (nada).

I just live with it now but sh/t like this bugs me. I like to know because prevention is better than cure and all that.
 
I know vibration threads have been done to death and all fingers normally point at engine or trans mount but this doesn't fit the usual criteria so looking for any out of the box thoughts or suggestions (hate that phrase but it's applicable here).

2009 S211 OM646 220 cdi 5spd Auto with currently about 129k on the clock. Great history pre and post sale to me in 2021.

So Transmission oil & filter change done at Merc indy in late 2021 because I had just purchased the car and it hadn't been done yet, then new Lemforder engine and transmission mounts fitted in July 2022 as the car was at 125k on originals and the merc specialist health check had mentioned they were worn. All mounts changed and didn't notice any real difference to be honest but at least they were ticked off the to do list.

By September 2022 I was noticing excessive vibration of the interior plastics and a noise like you would get if an exhaust wasn't fitted properly and vibrating against the underside of the car. Only happens while stationary if you select D or R. When stopped at traffic lights it's so annoying to me that I put it in neutral but here's the thing....this only happens in the first 30 minutes of running the car, get it nice and hot on a run and the problem totally dissappears.

Injectors all replaced (brand new) and various other fuel system components when trying to zero in on a rough idle issue last year but still this problem remains. Now here's something that maybe something or nothing...my wife mentioned it took a few cranks to fire up the other day, hooked up the code reader and it stated a historic EGR 20A3 but when I inspected the EGR last summer it was amazingly clean (non DPF car).

So is this potentially transmission, prop/bearing related or downstream effect of perhaps intake manifold/EGR shenanigans? Or none of the above?

I have been underneath and looked for unwanted contact points between exhaust and body (nada) I loosened all the exhaust fitting bolts and retightened in the hope it hadn't settled since the mounts were done (nada).

I just live with it now but sh/t like this bugs me. I like to know because prevention is better than cure and all that.
Hello mate, I’m having the same issue! Have you managed to get it fixed???
 
I know vibration threads have been done to death and all fingers normally point at engine or trans mount but this doesn't fit the usual criteria so looking for any out of the box thoughts or suggestions (hate that phrase but it's applicable here).

2009 S211 OM646 220 cdi 5spd Auto with currently about 129k on the clock. Great history pre and post sale to me in 2021.

So Transmission oil & filter change done at Merc indy in late 2021 because I had just purchased the car and it hadn't been done yet, then new Lemforder engine and transmission mounts fitted in July 2022 as the car was at 125k on originals and the merc specialist health check had mentioned they were worn. All mounts changed and didn't notice any real difference to be honest but at least they were ticked off the to do list.

By September 2022 I was noticing excessive vibration of the interior plastics and a noise like you would get if an exhaust wasn't fitted properly and vibrating against the underside of the car. Only happens while stationary if you select D or R. When stopped at traffic lights it's so annoying to me that I put it in neutral but here's the thing....this only happens in the first 30 minutes of running the car, get it nice and hot on a run and the problem totally dissappears.

Injectors all replaced (brand new) and various other fuel system components when trying to zero in on a rough idle issue last year but still this problem remains. Now here's something that maybe something or nothing...my wife mentioned it took a few cranks to fire up the other day, hooked up the code reader and it stated a historic EGR 20A3 but when I inspected the EGR last summer it was amazingly clean (non DPF car).

So is this potentially transmission, prop/bearing related or downstream effect of perhaps intake manifold/EGR shenanigans? Or none of the above?

I have been underneath and looked for unwanted contact points between exhaust and body (nada) I loosened all the exhaust fitting bolts and retightened in the hope it hadn't settled since the mounts were done (nada).

I just live with it now but sh/t like this bugs me. I like to know because prevention is better than cure and all that.
Have you found the problem as got same thing
 
Have you found the problem?
Hi 88Adam88,

I have not actually got round to trying things on it yet as i've been so busy. I posted this question in the other big MB forum and got a huge response so might be worth you looking through that and adding to the post. I'll try to insert the link at the bottom of this post.

It could be Torque converter, shift lock solenoid, conductor plate and so on. I had the gearbox oil changed by a merc specialist when I first got the car but having checked the invoice I can see that they changed the pilot bush, filter and added only 3.5L of oil which is barely half of what the transmission takes so I'll do a proper flush in the coming weeks by disconnecting the transmission oil cooler pipe and pumping it out that way. I maybe lucky and the fresh fluid takes away my woes.

If that doesn't work I'll just live with it for now as I am honestly sick of throwing money at it.

Cheers

Chris

2009 E220 CDi S211 - Vibration in D & R at idle (Eng & Trans Mounts done)
 
Hi 88Adam88,

I have not actually got round to trying things on it yet as i've been so busy. I posted this question in the other big MB forum and got a huge response so might be worth you looking through that and adding to the post. I'll try to insert the link at the bottom of this post.

It could be Torque converter, shift lock solenoid, conductor plate and so on. I had the gearbox oil changed by a merc specialist when I first got the car but having checked the invoice I can see that they changed the pilot bush, filter and added only 3.5L of oil which is barely half of what the transmission takes so I'll do a proper flush in the coming weeks by disconnecting the transmission oil cooler pipe and pumping it out that way. I maybe lucky and the fresh fluid takes away my woes.

If that doesn't work I'll just live with it for now as I am honestly sick of throwing money at it.

Cheers

Chris

2009 E220 CDi S211 - Vibration in D & R at idle (Eng & Trans Mounts done)
I'm getting same it's getting on my nerves, I changed trans oil and filter also trans mount, if you find the issue do share and I'll do the same. Thanks
 
I'm getting same it's getting on my nerves, I changed trans oil and filter also trans mount, if you find the issue do share and I'll do the same. Thanks
No worries buddy, will do. Just out of interest was it a partial trans oil change or a full on flush that you did?
 
I had all 3 mounts changed this week - not MB mounts but 2 febi engine and lemforder gearbox mount.
The original mounts were shot, but I can't say I noticed any undue vibrations - except when cold starting.
On the drive back after fitting, the car felt super smooth.
When restarting after a few hours standing, there was noticeable vibrations coming through the floor and felt through the accelerator pedal.
This is noticeable at low speeds, but less so at motorway speeds.
Car is going back to specialist on monday.
 
No worries buddy, will do. Just out of interest was it a partial trans oil change or a full on flush that you did?
Used mb oil and filter, got rid of old oil and filter that's all. Professional did mine
 
I had all 3 mounts changed this week - not MB mounts but 2 febi engine and lemforder gearbox mount.
The original mounts were shot, but I can't say I noticed any undue vibrations - except when cold starting.
On the drive back after fitting, the car felt super smooth.
When restarting after a few hours standing, there was noticeable vibrations coming through the floor and felt through the accelerator pedal.
This is noticeable at low speeds, but less so at motorway speeds.
Car is going back to specialist on monday.
Let me know what you find out mate thanks. Mines gets better as the engine gets warmer.
 
As said Vibration could be a number things, exhausts can cause vibration especially at higher mileage when cold or hot expansion create stress on the rubber mounts so an exhaust inspection can reveal anything that may be rubbing or up against other parts also its also worth noting how your vehicle vibrates in differing conditions
 
Well I've had reconditioned injectors so I know it's not that, I keep thinking about like egr valve, manifold or dpf as I can rev the engine and it do it then or coming to a stop at the lights
 
The febi mount which was fitted last week had collapsed, leaking fluid so the engine was basically sitting on metal
Replaced with an MB mount and problem solved. The febi mount lasted less than 40 miles.
 
The febi mount which was fitted last week had collapsed, leaking fluid so the engine was basically sitting on metal
Replaced with an MB mount and problem solved. The febi mount lasted less than 40 miles.
Thanks for sharing and glad you got it sorted
 
Given the extensive work you've already done on your 2009 S211 OM646 220 CDI, and the specific conditions under which you experience the vibration and noise (only in the first 30 minutes when stationary in Drive or Reverse), it could be related to the transmission or drivetrain components. Since the problem disappears when the car gets hot, it might indicate that something is expanding or settling into a better position when the vehicle warms up.

Considering the history of mounts, transmission service, and other fuel system work, it's a bit challenging to pinpoint the exact cause remotely. You might want to consider these steps:

  1. Transmission Inspection: Have the transmission thoroughly inspected, including the torque converter and related components. It's possible that there's an issue in the transmission that becomes less noticeable as it warms up.
  2. Driveshaft and Bearings: Check the driveshaft and its bearings for any play or wear. A worn driveshaft or its components could potentially cause vibration and noise.
  3. Exhaust System: Even though you've checked for contact points between the exhaust and the body, it's worth inspecting the entire exhaust system, including the hangers and brackets, for any signs of wear or damage.
  4. EGR System: Since you mentioned a historic EGR code, it's possible that the EGR system could be related to the issue. Ensure the EGR valve is functioning correctly and that there are no blockages in the EGR system.
  5. Fluid Levels: Double-check the fluid levels in the transmission and other relevant systems to ensure they are at the correct levels.
  6. Additional Diagnostic: If the problem persists, you might want to consider a more in-depth diagnostic by a specialist who can use specialized equipment to analyze the drivetrain, transmission, and engine performance simultaneously.
Ultimately, a hands-on inspection by a qualified technician may be the best way to diagnose and resolve this issue, as they can perform tests and inspections that are not possible through a text-based conversation.
 
Hi just to let everyone know it was the engine mounts that was causing the problem, all done and sorted 👍🏼😀
 
Hi just to let everyone know it was the engine mounts that was causing the problem, all done and sorted 👍🏼😀
Thanks for letting us know mate, really glad you are sorted.

I did a 4L Trans Oil change just last weekend after noting that the oil level was just at the bottom of the min level at 25 degs and 80 degs. I was hoping for a quick win with level increase and better fluid but its just the same as it ever was 😬.
 
Thanks for letting us know mate, really glad you are sorted.

I did a 4L Trans Oil change just last weekend after noting that the oil level was just at the bottom of the min level at 25 degs and 80 degs. I was hoping for a quick win with level increase and better fluid but its just the same as it ever was 😬.
Thanks I hope you get yours sorted 🤞🏼
 

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