1986 560sl.From park to reverse it revs up 200.From reverse to drive,same thing.From whatever gear to whatever other gear it
revs up 200 RPM and then shifts.What causes this,and why doesn't
it just stay the same thru the shifts??It is primarily worse on cold starts(after
it sits 4 or 5 hrs.After it is really warm it is not as bad,but it still does it!