Check for recalls at
http://www.alldata.com/recalls/ Your friend means the fuel pump thats in the fuel tank. Do you have one tank? Is your truck under warranty? Maybe draining and cleaning out the tank, last resort.???? Could be fuel filter is clogged again?? I have an 87 f150 4.9 and my external fuel pump is going bad, it's doing the same thing as yours. Is your fuel pump making a load winning noise coming from under your feet when your driving? Ps how do i start a new post, i'm new to this site. :) Thanks, Mike