I have an 89 626 turbo with a problem that all the dealers in town refuse to acknowlege. Under acceleration or load (Like climbing a steep hill), the cars drivetrain starts to shake violently, will jump out of 5th gear, and is generally making unhappy noises under power around right turns. Its not axles (new), clutch or related (new). The engine and all related electronics are perfect, the car runs sub 7 second 0-60, what the heck is going on? The dealers here in the city won't let me drive them into conditions where the problems are really noticable, +50mph, in the higher gears, but I can feel them in 2nd and 3rd myself. whats going on?!