In my auto '89 244, I get a serious momentary vibration when I accelerate hard (or at least as hard as an N/A B230 will). At first it only happened just when the tranny was shifting from first to second, but now it will do it when moving from a stop if I really step on it. I can pretty much completely avoid this by being gentle with the throttle, at least for now.
It has the feel of a shaft rubbing against something because the geometry of the driveline has changed because of the revving or acceleration, but that is just a guess.
Anybody got any ideas of where to look first and what diagnostics I can do ?
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Andy in St. Paul, '91 745 Regina 198K mi, '89 244 141K, '87 245 RIP
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