Originally Posted by HANK1
did any of those things work? I am having the same issue. Replaced the tps, cps, vss, and the trans temp sender still no luck.
it turned out to be the throttle position sensor.
took the truck to a shop to verify the suspected problem with a code reader and then spent the bucks and bought a new one(tps) BUT the problem returned soon after. I had to adjust my tps.
On top of the fuel injection pump under the tps is a flat piece(looks like a big flat head screwdriver) that fits into the tps. This piece is removable and adjustable.It has a small bolt on the back side of it that fits into a hex slot on the pump. By turning the bolt and holding the slot head(or vice versa) you adjust the shift point (into o/d) on your transmission.
It took a couple of roadside adjustments but I got it to where I want it and seems to be working fine. Just pack along a proper size allen wrench,an 8mm wrench and a pair of pliers or a small cresent to hold that slot as you adjust the small bolt. hope this works for you.