Kenworth accelerator pedal issues

Good evening guys,
I have a 1996 W900-B with a Cummings M11 engine and a celect plus computer.
I had issues with pedal working intermittently and changed the potentiometer. That did nothing. It started working fine for a while and then all of a sudden quickly got worse and worse then completely quit. Kenworth now only sells the potentiometer, idle validation switch, and wiring harness as a kit. I don’t think it is the potentiometer but not sure about the others.
Has anyone had this issue before?

Any help or direction would be greatly appreciated.
Thanks in advance.

I just ran into the same problem on a 95 W900B with a N-14. The driver said the pedal would go dead and he would reach down and lift the pedal, grab to roller and pull it all the way to full throttle and let it snap back. That would cure it for a while until he had to do it again. We changed the potentiometer, limit switch and wiring harness and it made no difference. I was ready to dive in deep thinking it was something else but asked a friend of mine who has been a Cummins mechanic for 30 years about it. He said immediately "change the whole pedal assembly!" He had fought the same thing for 3 days one time after just replacing the parts in the pedal therefore eliminating it in his opinion. He finally plugged a new pedal in and it fixed it after being through anything and everything else. A new pedal is about a thousand bucks so I was nervous to try it but that is what fixed it. If you can find another truck with that pedal you can swap to make sure that would be nice, but I would bet dollars to doughnuts that is what it is. Don't ask me why though, I couldn't figure out what was wrong with the old pedal with the new parts.

Interesting...may know where a later model with a cat engine is. Fingers crossed it has the same pedal.
Thanks for the feedback!

I adjusted the rubber part of the idle validation switch up a little and it worked. Guess the little metal arm wasn’t making contact.
Thanks again for the help.

Awesome, I know what you are referring to, good catch!