98 gm tiltmaster/ Isuzu NPR with 5.7 and 4l80e. Everthing looks original except the transmission. Trans out of a 2007. Put about 500miles since I got it. Pulled trans because I was getting a hard shift from 3toOD and trans fluid looked like it was never changed ( not burnt). Trans is currently disassembled and mostly rebuild. Everything looks good, but overrun clutch, metals, and pressure plate are burnt and dished. Overrun sprang has burnt plastic but still looks functional.
So, my guess is overrun clutch/piston is being applied in OD? Reverse felt normal.
Best way to check? I'm a bit lost on how to troubleshoot this.
So, my guess is overrun clutch/piston is being applied in OD? Reverse felt normal.
Best way to check? I'm a bit lost on how to troubleshoot this.