04 2.5t... when car is in neutral or park, runs smooth as butter... the second I slip it into drive, or reverse, it gets real shakey (only at idle). Now I know that drive and reverse are at a lower RPM, but there is no change in the reading on the tach... Does anyone know what I can do to smooth out my idle?? Thanks guys!!

 

Check the R/S engine mount. R/S of the car front of the engine. I have seen a few of these go bad.