Ok well i have a 1994 dodge ram 1500 with a bit of a problem. I recently replace my intake manifold gaskets and the plenum and like a day later i notice a problem. Going along at high way speed like anything over 80 km/ph and warmed up it gives a hard shift going into lock up. Now i have gone to a trans shop and they said the trans its self was fine and that the problem was in the motor or could be a sensor or electrical. now i have replaced the tps and had the trans rebuilt last year but i cant seem to figure out what is causeing it. does anyone have any insite on my problem.