I have noticed that when coming up a hill near my home (10%), the engine surges and the only way to get it to quit is give it more or less pressure on the accelerator. I have a feeling that it's being caused by my foot oscillating on the pedal when the truck accelerates causing a "mechanical" oscillation of my foot pressure on the pedal. Has anyone else ever noticed anything like this? It has never happened on any other vehicle before, but I have never had a vehicle with this much torque before.

 

I did the APPS cal. when I replaced the injectors. I am going to do it again, just to make sure.