V10 Eng, desperate in need of help

I have a 2003 Ford with the V 10, and the fuel pump started to go out at only 50,000 miles. Does it also need extra cranking when starting? With a new fuel filter in it, have them measure the fuel pressure for starters. Also check the IAC valve(Idle air control), on the back of the engine and check the plastic lines and rubber connectors. The rubber will sometimes deteriorate and leak vacuum giving strange symptoms. When the fuel pumps get old, the centrifugal force of a turn can ground them out internally and stall it. Another thing to try while it's running: locate the camshaft and crankshaft position sensors, and give each a very light tap with a hammer. If it's going bad the engine will stall.