Its called shuttle shift, its a common occurence, sometimes easy to fix other times not.
Start out by replacing the governor pressure solenoid and pressure sensor on the valve body. Its the most common culprit.
A shift enahcer like DTT's piec e works quite well also. A shift kit is a great way to eliminate some of these problems.
Start out by replacing the governor pressure solenoid and pressure sensor on the valve body. Its the most common culprit.
A shift enahcer like DTT's piec e works quite well also. A shift kit is a great way to eliminate some of these problems.