tran goes into limp mode some times it will shift just fine   some times you start it up put it in drive and it locks up, kills engine   start it backup put in reverse   back up then dr. it will move mite shift ,mite not?????help 1992chry.town &country 4sped auto have rebuilt the tran.

Optional Information:
1992 Chrysler chry 3..3

Already Tried:
rebuilt tran rebuilt tourq.new imput sencer upgrade comp.