My dad has a 2000 ram 3500. Every once in a while you will push on the throttle and there will be no response. If you let off the throttle it will come down and if you shift down and get back in it it will be fine for a little while. I say it is the throttle position sensor. After reading an article on here it also sounds like it could be the ECM. O one other thing it has an edge EZ on it if that makes a difference. What do you guys think. Thanks Sam