There are several threads about this problem. None that I have seen have come to an easy definite resolution. Some have said it's the motor mounts but others say changing the mounts did nothing. Some say the trans needs to be flashed. Others say no. The last one I've heard is that there could be an unmetered air leak in the intake (I know for a fact this will cause weird engine vibrations) but unmetered leaks usually result in a code or CEL. This is what I have found in the threads. Mine still vibrates because I'm not going to just throw money at the car for a problem (possibly one that is only perceived) that doesn't seem to be too serious.


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Current:
2003 X5 3.0 -- 170K
1996 Z3 1.9 -- 128K
1968 Ford F250 Camper Special

Previous:
1994 BMW 318is
2004 325i
2003 Honda Accord
1969 Ford Bronco
1963 VW Manx 1776cc1969 VW Bug 1600cc
1963 1/2 Ford Falcon Sprint 5.0
1968 Ford Mustang
1964 Ford Falcon Futura
1964 Ford Falcon Ranchero
1962 Ford Falcon
1953 Chevy Sedan
1994 Jeep Wrangler