1992 Pontiac Bonneville. Check Engine.
Question = If I put the car in low gear it will still shift to 2&3 just
as if I put it in drive.
When the car is at normal temp. And I am on the highway going 50 or 55
the car will clunk as if it were trying to shift gears. It is worst in
OD. But still happens in drive.
SF:
Sounds like a 4th clutch problem. Possible spun 4th clutch shaft.
Removing the pan may reveal metal debre. If so, the debre will have
circulated throughout the transmission. Either way, with this many miles, it
sounds like time for an overhaul, or replacement trans.
Transmission Problems and Check Engine Light