I have a 2000 E320 with 120K miles. Car vibrates at idle when the shifter is in R or D. Turn AC on makes the condition worse. It runs fine without any problem. Changed the plugs and wires made no difference.

Is there a idle control module on this car? Where should I look?

Thanks
Bob

Sounds like motor mounts and or transmission mounts

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Dennis
2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles.
2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner
1997 E300d Silver 300,000 miles As of Jan 05, 2010
3rd owner SOLD

x2

To test this, hit the throttle cable and the motor move alot if the mounts are bad.

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1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)

Or just visually inspect them for cracks or alot of play using a long flat screwdriver carefully.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

x3. Use a big rubber bushing between floor jack and oil pan and lift engine 1/4". See if vib is gone.

If still there look at the AC comp for drag.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

this will be motor mounts no doubt.

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David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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