Engine vibration question . . .

Jul 17, 2010 | 10:04 AM

Floobydust

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From: Massachusetts

2018 GLE350, 2014 G550, 2000 SL500, 1980 TR8, 1995 E320 Cabriolet

Engine vibration question . . .

I'm getting a little bit of engine vibration at idle. The engine itself is running fine, so this is not a misfire type of thing. Idle speed is perfect. It feels like just the normal engine mechanical vibrations are being transmitted more heavily that they should be. At any other speed, everything is fine. I would suspect the engine mounts, but before I go to all that trouble, does anyone have any experience / thoughts about something like this? It's really not a big deal, but little things like this tend to bug me (machines, especially fine German machines, should run smoothly).

Thanks,

- FD

Jul 17, 2010 | 01:09 PM

spetz

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1994 E220 Coupe

Are the vibrations only present in D?
If so, try putting it in R and see if the vibrations are still there.

It sounds like engine mounts though

Jul 17, 2010 | 11:05 PM

Floobydust

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From: Massachusetts

2018 GLE350, 2014 G550, 2000 SL500, 1980 TR8, 1995 E320 Cabriolet

Quote:

Originally Posted by spetz

Are the vibrations only present in D?
If so, try putting it in R and see if the vibrations are still there.

It's seems to be the same in both D and R. Significance . . . ?

Jul 18, 2010 | 02:34 AM

spetz

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1994 E220 Coupe

Usually one engine mount goes first, which is the one that gets the most pressure while in D (I can't remember which one it is) and the one in R gets less pressure over it's period and hence is generally in better condition and does not fail as soon as the other one, hence in R it should be smoother while idling.
This was the case in my 124. The idle was quite bad in D, but after the mounts were changed it idled very nicely

Jul 18, 2010 | 02:50 AM

albert101

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Joined: Jan 2009

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From: Philippines/California, USA

W204 C280

Sounds like your engine mounts need to be replaced. I was getting rough idling too, I had to change my engine mounts at 28k km. If you tend to drive hard or accelerate hard, it'll wear out your engine mounts sooner.