Well i got codes for alllllll 8 inj low icp codes. I got icp low. I got egr insuficent flow and i think thats it.....i didnt have a pen to write them down with sorry. I looked at the ipr it was commanding 75% @ start up and icp cranked went up too 600 and when it fired went to 1000 and settle in around 600. All looked normal to me. Do the hpop fail suddenly in early 04 models to shut the truck down? Then start pumping again and do fine for a while? Im gonna check the icp sensor and wires after it cools down.