Fuel Pump Driver Module (FPDM)
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Joined: Jul 2016
Posts: 39
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From: Western Massachusetts
Fuel Pump Driver Module (FPDM)
Decided to see if my spare tire was accessible (truck originally from Maine)...I had ordered a $58 FPDM from Rock Auto along with other PM items like oil filters, RTV, exhaust etc... because of the discussions here last month. So the spare came down and I WD-40'd the heck out of it straight up in the winch part. Had to hammer the part off that held the spare because it was rusted to the rim. So it went well and I was happy that if I got a flat I could change it easily. Hate the possibility of being left on the road on a cold winter night so I decided to look at the FPDM...see photo below:
The mounting holes had corroded off, the module was in three pieces, and the bolts originally holding it were rusted solid into the frame member. Someone had it attached with a heavy duty strap so I imagine they must have seen it while doing some other maintenance work or saw it hanging by the harness when they lowered the spare (as it was not the original tire) and they strapped it to the frame. (the truck is over 12 years old and has 184000 miles on it.)
Took me ten minutes to back out the bolts with vise grips, WD40 and channel locks. Didn't want to use straps to mount it so I took my time. Also had to dig out the hole where it aligns itself as the aluminum peg had corroded off of it. It worked and mounted the new one on here:
It sits about 1/2 inch off the frame and works great. Decided to change out my differential fluid while the spare was down and I installed a new cover ($18 from TASCO Ford) since the original was in bad rusted shape.
One less thing to go wrong for the winter!
The mounting holes had corroded off, the module was in three pieces, and the bolts originally holding it were rusted solid into the frame member. Someone had it attached with a heavy duty strap so I imagine they must have seen it while doing some other maintenance work or saw it hanging by the harness when they lowered the spare (as it was not the original tire) and they strapped it to the frame. (the truck is over 12 years old and has 184000 miles on it.)
Took me ten minutes to back out the bolts with vise grips, WD40 and channel locks. Didn't want to use straps to mount it so I took my time. Also had to dig out the hole where it aligns itself as the aluminum peg had corroded off of it. It worked and mounted the new one on here:
It sits about 1/2 inch off the frame and works great. Decided to change out my differential fluid while the spare was down and I installed a new cover ($18 from TASCO Ford) since the original was in bad rusted shape.
One less thing to go wrong for the winter!
Last edited by HarryK; Aug 28, 2016 at 09:10 AM. Reason: spelling
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Joined: May 2016
Posts: 18
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From: Houston
I did this critical swap on Friday. Sure enough, the stock one was in pitiful shape. Immediately noticed smoother, quicker pickup when on and off throttle on freeway. Who knows when the original would of failed, but the clock was ticking.
