Took a few moments to write, a couple hours laying on back reaching and trying not to damage wire in connector end. Splices prepared, soldered, shrink tube shrunk, wrap with a few rounds of good Super 33 tape, close loom, tape up, hook up again.
Remove some factory tape and open up split loom and free up wires and find some in my wire box close to same color and some shrink tube and splice in pieces for both these wires. Well, this isn't so bad, far better to find now, here, instead of on the interstate at 10PM in holiday traffic 250 miles from home? Bad squirrels.
These two wires are 20 gage, very small and go to terminals: 1 ( blu/red Fuel pump driver module monitor) and 6 ( org Fuel pump driver module control).
The orange wire was chewed too, bare copper showing and several strands damaged. Got my magnifying glass out and some light, the blue/red wire had been chewed through and appearantly a single strand, maybe two. I know the wire had to have been partially intact as I drove the truck to the apron, and I never pulled on the connector. I felt around the connector and suddenly the light blue wire with red tracer was broken about 3/4' from the connector where it vanished into the plastic loom. I thought I was done except for plugging the wire in and putting the spare back.:thumbsup: I went to plug the harness connector C433 back in place on the mudule and I felt something. I slipped two more 1/4' stailess steel washers over top and another pair of 6mm Nylock nuts which I snugged down. I cut two pieces of 5/16 fuel line a little longer than the height of the nuts and slipped over the nuts., then slipped some 1/4' washers in place, set the module in place and saw it had about 3/16' between it's back and the crossmember. I applied more clear laquer to the area on the studs and nuts against the crossmember. I installed these studs and snugged up the nuts against the crossmember. Then I installed a Nylock nut on each leaving me about 1/3 of the threads to go into the frame crossmember, the rest above the nut as a stud. I took two longer M6 x 1.0 x 40 bolts and chuck them in a vise with aluminum faces and cut the heads off and then filed the ends smooth. I applied a couple coats of paint ( no picture of it painted, but I did) and let those items dry while I tackled the issue of stand offs. I cleaned the frame crossmember area as well, minimal signs of corrosion there. I cleaned it off and applied a coat of clear laquer. Today I backed the truck up on my shop apron, dropped the spare, removed the module and found it had some minor corrosion. I read it and one poster posted of his on his 07 being 'gone'. Late last night I was browsing the tech articles here as I enjoyed a cup of coffee, and came across a tech thread about a 'Fuel Pump Driver Module' located on the back side of a crossmember under the bed. And yesterday we unpacked and got the mail, washed the truck, etc. Well, we just drove the truck to Conyers, Ga last week and got back home night for last about 12 midnight, came back across the Smokies with a coat of snow. I can't be the only one with this issue and wondering WHY!!! - it must be widespread? MAKES PERFECT SENSE!! I thought to be and engineer took some sort of brains and common sense. No no, don't put it all in plastic, just half of the unit. My b!tch is this: why, if this module is half encased in plastic do the engineers feel the need to encase the other half in metal (appeared to be cast aluminum)?!!?!! Of course it makes sense to have an electrical unit that is mounted underneath the truck where it can collect all the moisture, snow, salt from the road encased in a corrodable metal housing. The end to my long story is it was the fuel pump module (luckily a lot cheaper fix than the fuel pump) - half of the housing was gone (corroded away) adn moisture was shorting the pump electronics.
After getting it towed to the mechanics, he figured the fuel pump was finally shot. It died several times and finally for good. Then one rainy moring on my way to work the truck was running very rough and 'clunky' again. Again, not thinking much of it continued to drive truck with no issues for awhile. Local mechanic thought it might be a fuel pump issue but then got truck running thinking it might have been a delayed inertia switch in front panel (I had hit a deer a week or 2 prior). I was then away for a couple days and came home to find my truck wouldn't run (started briefly then died). 2007 F150 Fuel Pump Driver Module LocationÄidn't think much of it and truck ran fine for month or so.
After 15 miles and a stop truck ran fine. On a moist day I was headed out and the truck ran very rough, 'clunky', like it wasn't getting gas. First it was the whole spark plug debacle. So I have yet one more reason to wonder what the the egineers at Ford are thinking.