S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

Engine Shake

Old May 25, 2004 | 06:02 AM
  #1  
amgmercedes's Avatar
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Engine Shake

My M119 (500) suddenly developed a pronounced shaking, it was fine when I got to my destination. But started to shake when I started it up as I was about to leave.

Motor and tranny mounts have been replaced about 3000km ago.

Engine seems to be running fine and no misfire, shaking increases when put in "P" or "N", decreases when put in "D".

Any ideas?

Thanks.
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Old May 25, 2004 | 05:25 PM
  #2  
Mark Pedersen's Avatar
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From: Weddington, NC
S600 Coupe. 560SEC, E55
Engine mounts?
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Old May 26, 2004 | 01:17 AM
  #3  
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Solved the problem, removed the air cleaner and looked around. There is a vacuum line connected right next to the injector for cylinder #1 (cylinder nearest front of car, left hand side when standing in front of the car) It somehow got pulled off, plugged it back in and shaking stopped.
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