As title. I have read a bunch of rough idle threads. If there's a vaccuum leak the car will have rough idle regardless of which gear it is in. However, for me, it's smooth as butter when I stop in P or N. But when I stop in R or N, the whole car literally vibrates like a vibrator. Already checked for vaccuum leaks and the elbow thing on the intake, new spark plugs, did DISA valve & cleaned ICV. Any help would be appreciated.