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I'm having the exact same issue, but also getting the CEL come on exactly the same time the engine starts running rough. Truck just started doing it all of a sudden, there was no lead up symptoms but now she does it every time when warmed up, when cold pulls like a scalled dog. I haven't done anything yet to troubleshoot except pull the wire off the CPS, didn't change the way the truck ran so I guess its not it.
[/quote]I haven't done anything yet to troubleshoot except pull the wire off the CPS, didn't change the way the truck ran so I guess its not it. [/quote]
Meant pulled the wire off the ICP sensor , not CPS.
Yes, I do have an update. I started a thread about what I did and what worked.
I first made a list of things that I learned from this site about common problems. Here was my list in order of my intent to scope out the problems and their fixes.
1) Pull tank and look at the filters and do the tank update.
2) Do the .50 under valve cover repair
3) Fix the high pressure pump valve.
I pulled the tank and found the pick up tube screen plugged. I then pulled apart the mixing white plastic and found the other two filters. Totally plugged. Instead of cleaning the filters, I replaced the whole system with the recommended fuel tank update.
This fixed the whole thing. I have driven it quite a bit with no one falter.
I have not done the other two items as the first item was the problem!
Once again, thanks to all that support and give real qualified information on this site!