Finally had my MOPAR guru hook my overdrive up manually thru a high beam switch on the floor bypassing all the electronic controls. Now nothing can effect weather or not it works, not the VSS, the TPS, the PCM, the crank sensor, my mother in law, space aliens, Richard Simmons, nothing. Put a indicator light next to the tach so I can tell when it's disengaged. Should have done this years ago.