How's the timing chain?
Maybe it skipped a few teeth and the cam is retarded.
I haven't gotten that far. But the truck is definitely a special one!!
sounds like tps I dont know just my thought
It's been thru two new ones. One before BIL bought it, and after. And its dialed in. Runs better without it plugged in. But not good.
One thing I noticed today, one of the EGR bolts on the back of the plenum was broke off, so only one holding it on. Maybe sucking air there, causing the issue?
