The only computer controlled tranny in 94 was the A604. Not all A604 equipt vehicles had an "Overdrive" switch, non of my minivans have had it (89,93,94). Good luck rebuilding it, there is a large snap ring in the middle of the case holding one of the clutch units in. It is under a lot of pressure. A friend of mine who is a Chrysler technician tried one of these without the special tool and destryed the case.