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Old 12-12-2001, 11:55 PM
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Unhappy Engine vibration at 3000 rpm - 190E

My 93 190E 2.3 auto has around 127K miles on it. I've been puzzled lately as to why it has developed a high frequency "trembling" feel, felt through the steering wheel, the seat, and even the accelerator pedal. Sitting still, if I rev it up to 3000+ rpm, I feel the same thing. The idle is stable (not missing), but rougher than I think it should be. Engine mounts were replaced 8,000 miles ago.

Is this the sign (or imminent) of a blown valve? bad compression in cylinder? fouled sparkplug? some bearing? Or just a fact of life with a largish, old, 4 cylinder?
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Old 07-02-2002, 08:02 PM
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I've got the same problem with my 16V. Mine has even compression across all cylinders and new engine and trans mounts. The engine vibrates at idle and while it is running.
Any ideas? Thanks!
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Old 07-02-2002, 08:26 PM
Join Date: Jul 2001
Location: Old Lyme, Connecticut
Posts: 3,596
Have the same issue with the 1986 190E 2.3-16. Had other problems that caused the rebuilding of the head, but it appears the rough running is a consequence of poor injector spray pattern. Changed the fuel filter, which helped slightly. Will be replacing them in the next few months. When I checked the number one and two units they did not have a spray pattern, it was more like a dribble. Will post the results when the change happens. Jim
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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Old 07-02-2002, 10:48 PM
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Thanks for the response and please keep us posted on the results after you have replaced your injectors. I hope it works because the vibration is really annoying. It begins at idle and vibrates at various RPMs whether in neutral or in gear driving down the highway. BTW my 16V is an automatic but I don't think it matters.
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Old 07-24-2002, 11:49 PM
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Still have the vibration problem. New motor and transmission mounts, even compression across all cylinders, new idle valve, new spark plugs, checked ignition wires. Could this be a misfiring cylinder? It is a high frequency vibration that occurs at idle and at various RPMs even while driving. Seems to be most noticeable at approx 1500 and 2500 RPMs. Any ideas?
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