I have searched the many posts for rough idle and can't find one that addresses rough idle in gear only.
Park and neutral is not rough but high.
ICV is fine, IC module is fine. Replaced leaking EHA, no vacuum leaks.

Mechanic said that high idle was from ICV not getting proper ground and he ran a jumper wire from harness below IC module to lower the idle, but that did not fix the rough idle in gear only.

Any help/suggestions appreciated.

Bad motor mounts can make a car feel like it has an idle problem.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".