My other cruiser is makin this jumping movement like it wants to shift gears. When its in reverse its a smoothe slate. But when you put it in drive that's when it wants to jump really hard.
Sounds like a bad motor mount.
yeh sounds like a motor mount,,, get under the hood and rev it fairly hard and see if it moves around excessively,, and I don't mean only 3k rpms I mean fairly hard,, not like hold red line or anything just some sharp hard revs,, that should make the engine jump if their bad
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Kelly Little Ashford