I have a 2001 7.3 F-250. Will driving the other day up a incline the truck just started loosing power and eventually shutdown. The truck has plenty of fuel, the oil, oil filter and fuel filter was just changed 2 months ago. I replaced the fuel pump because I had a spare. It sounds a lot stronger than the old fuel pump did. Still no start. I replaced the cam senior still no start. I've also replaced the IPR and still no start. Does anyone have any ideas of what it could be to stop me from have a bunch of good old parts sitting on a shelf. Thanks in advance.