hey guys, i have a 2001 f4i and an 03 f4i the 03 runs great but the 01 will crank but not start. thier is no fuel pump noise when you turn on the ignition. i used parts from my 03. i swaped the computer, the sensors in the rear and the tip switch as well as the whole tank just to see if it was the pump itsself. no luck i have power to the switch and the pump but something still is not right. any help?