#2005 EXPEDITION FUEL PUMP REPLACEMWNT DRIVER#
#2005 EXPEDITION FUEL PUMP REPLACEMWNT CODE#
#2005 EXPEDITION FUEL PUMP REPLACEMWNT SERIES#
#2005 EXPEDITION FUEL PUMP REPLACEMWNT MAC#

Between 5% and 50% duty cycle is the normal range of demands from the PCM to the FPDM.

#2005 EXPEDITION FUEL PUMP REPLACEMWNT DRIVER#

To achieve its goal, the PCM communicates a duty cycle to the fuel pump driver module (FPDM). The fuel pump relay is now toggled by the ignition switch. One notable change however, is the PCM no longer controls the fuel pump relay. One Ford-specific component that still remains after more than two decades is the inertia fuel cut-off switch. A couple of things that become optional across other makes that Ford still includes are the fuel pump relay and the in-line fuel filter. This much should remain the same for any electronic returnless system. This system consists of a rotary vane fuel pump (same as before), fuel line (pressure only), fuel rail pressure sensor (that also contains a temperature sensor), fuel pump control module and, of course, the PCM. With an electronic returnless system, the PCM can now raise or lower fuel pressure at will. Also, making it electronically pressure controlled gives the PCM more flexibility over fuel control by adding another option if needed. Brian Sexton, Automotive Technical Writer, Babcox MediaĪs an additional benefit, a returnless system, having one less fuel line, reduces the chances of a fuel leak.

#2005 EXPEDITION FUEL PUMP REPLACEMWNT MAC#

Mac Chastain, Product Specialist, Mevotech.Victor Moreira, Technical Services Manager, Mevotech.Preventing damage when performing unrelated repairs.You will learn what you can do to avoid wheel bearing and hub assembly failure, including: If you want to avoid these common and simple errors, register now for our webinar. Simple mistakes made before the hub assembly makes its first active rotation can determine how well it will perform in service and how long it will last. These webinars will help technicians make better choices for both the customer’s satisfaction and the shop’s bottom line.Ĭommon oversights when servicing wheel bearings can often cause them to fail prematurely.

#2005 EXPEDITION FUEL PUMP REPLACEMWNT SERIES#

This webinar series addresses the aftermarket issues Technicians face every day, including avoiding plastic in key chassis components, adapting to the needs of EVs, finding fixes for OE faults and preventing costly repair mistakes. Older vehicles have tired, worn components, sagging suspensions and altered geometries.

#2005 EXPEDITION FUEL PUMP REPLACEMWNT CODE#

no.ĭo you still have your owners manual? it may give the location in cryptic code of where the inertia switch is.An aftermarket vehicle is not the same as one that is fresh off the line. I don't know where the fuel pump inertia switch is in that model. but it will probably have too much fuel pressure to operate the engine without screwing stuff up. PIN 2 wire negative is BROWN/orange.ĭon't forget that this electric fuel pump is variable speed controlled you can power it up directly to test it. pin 4 wire positive is PINK/black stripe. is this one up above something in the rear of the truck. i recall that those had an issue with corrosion also. probably a white wire but i am only looking at the wiring diagram you got pm'd. you should have power on pin 5 at the fuel pump driver module. so key on relay pinched to close the contacts for testing. the inertia switch feeds pin 5 on the fuel pump driver module. Any kind of help is greatly appreciated thank youįuse F1.12 feeds the fuel pump relay contacts. Only other thing I think might be the problem is Powertrain Control Module but I honestly have no other idea. 24 or so volts.Ĭhecked the fuses and even disassembled the fuse box to get to the non servicable fuel pump relay to see if it had burnt out but it looked fine and also did a continuity test since I know no other way of troubleshooting that relay because it soldered on to a board.īut I think the relays and fuses are fine since I'm getting some type of reading. When straight to the fuse box found the green/yellow wire which i believe is the line driving the fuel pump voltage and also get a max of about.

checked the positive line of the connector and have no voltage going through.Ĭhecked Fuel Pump Driver Module white wire which comes from the inertia switch which we bypassed to also see if the problem was the inertia switch and I get a max of. We began diagnosing from the pump and working our way to the fuse box.įuel Pump does not turn on for the few seconds it should to prime the vehicle. The fuel pump is brand new and also the Fuel Pump Drive Module is brand new and the car starts if you put starter fluid which means it is a fuel pump problem. Hello there is a ford expedition me and my dad are trying to fix for my aunt, but we cant seem to find the problem.

2005 expedition fuel pump replacemwnt