1992 4x4 brothers truck has been acting up last couple of days. Automatic trans works on and off. First reverse would not work for about 15 min. It came back. The next day he took it to a mechanic and got the tranny fluid changed. He said that eve it run like a top. Parked in flat drive that night come out and no reverse. Later today went out and reverse worked but the forward gears would not. Just a few min ago went out and it worked great like a new truck hope somebody can give us an answer.

 

Pull codes: www.fordfuelinjection.com could be a bad MLPS, or even a weak transmission pump.

 

what trans does it have?