torqu converter wont stay in lock up 1994 dodge cummins
 

when driving 50 to 55 mph it jumps in and out of lock up and at 70 mph it will not lock up at all if u mash the gas all the way it will lock up until you let off????? please help:c::c:

problem in the valvebody maybe

im gonna put a lock up switch in it

try that and if it still does it then i'd for sure look into the valvebody being the problem

Bad tps?

possible also

any luck on this i just bought a 94 that is doing the same thing

I have same problem only mine won't stay locked over 70 mph. Lower it will. I'm thinking tps, going to do the pod mod this week to see if that helps.

mine did the same thing it was the tps, changed it world of diffrence the lock up switch is great mod by the way i love mine

ok i am new to the 12v and the overdrive transmissions time to do research