voila! Your fingers likely found the shield that the FPDM is bolted to. If you reacher arm in toward the direction of the passenger tire. Look at the top of the frame beam that runs between the dr side tire and the hanging spare tire under the box. The shield is easily visible once u remove the five screws that hold the driver's side, rear mudsplash on. The FPDM is fastened to, and hidden by a small, metal shield that sits directly ontop of the frame beam,that runs (front to back) between ur driver's tire,and the spare tire.
A particular thorn in my keister that has been my most recent bane (until today) was actually manufactured in July 2002. What is the issue you are having with your vehicle?įrom what I've personally seen, the F150 Series (with the 5.4l Triton motor) in Canada, came with that fuel pump driver module setup as a stock product in the '03 model year. There is one supply line going to the fuel rail, and one return line leaving the fuel rail.Ī returnless system uses one line, and pressure is controlled by varying duty cycle of the fuel pump with a FPDM to acheive proper pressure, dependant on Fuel rail presssure sensor readings. The excess pressure is then returned to the fuel tank. Meaning your fuel pump runs at a constant speed sending constant pressure, where it is regulated at the fuel pressure regulator on the fuel rail.
Terd_ferguson_1 wrote:By two pipe system he means it is a return type fuel system.
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