I own a 1994 F150 4x4 5.8 Automatic. I had the transmission replaced with a factory rebuild about 25M miles ago because the original transmission seemed to slip out of gear and back into gear intermittently and sometimes violently at any speed.
I replaced this transmission and now the new rebuilt transmission is doing the same exact thing.
One fella told me to have the torque converter checked.
I would appreciate any ideas you may have to correct the problem. Other than this transmission issue, the truck is one great vehicle despite its age. HELP!