I have a 2001 2500 with a 5 speed just replaced a bad tps but am still having dead pedal issues with no codes and need some extra input

 

What is your fuel pressure?

Stock lift pump?

It is possible to get another bad TPS, it happens more then you may think. Was it calibrated already?

 

Haven't checked pressure yet doing that in the morning it looks like the stock lift pump I don't know on the calibration it should have been I put it in last nite im thinking I might just buy an upgraded pump n lift pump it its them

---AutoMerged DoublePost---

10 psi at idle and 5at wot

 

There are possibilities that it is this. You can attempt a fix or just buy a new VP44. Mine did the same intermittently, but finally threw codes. It was the VP44. Although I had good fuel pressure, I figured the pump possibility did not have that kind of pressure all its life and may have gotten hurt. I was the second owner. I ended up replacing the vp44.

https://www.dieselbombers.com/98-5-0...ronic-fix.html