Fuel Pump Problems!
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Senior User
Joined: Aug 2009
Posts: 100
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From: Mohnton, PA
Fuel Pump Problems!
My 04 150 5.4 needs a fuel pump. Do I go with the Ford replacement unit or get the replacement pump and screen (and reuse everything else) from Advanced Auto? Difference of $200.
Hotshot
Joined: Feb 2004
Posts: 10,746
Likes: 2,587
From: The Shenandoah Valley
Just out of curiosity, how sure are you that it needs a new fuel pump?
Not saying you are wrong, but you do know there is a device that communicates between the fuel pump and the PCM and it's called a "Fuel Pump Driver Module"?
It's located above the spare over on the left side on the rear side of a semi round crossmember, factory bolted it to the frame. It has an aluminum body and the accumulation of road salts, moisture, etc leads to corosion between the aluminum body of the FPDM and the steel frame rail. Some have found their coroded so badly as to have holes in the back side and in some cases broken in pieces.
I removed mine and found only minor corosion,
so I cleaned it and then clearcoated it rather well,
cleaned and then painted the frame there,
and reinstalled it using some home made longer 5 or 6 mm studs I made with long bolts and some spacers to space mine a good 1/4" off the frame.
Below are pics of "not good" FPDMs, it's not so rare. These are not mine.
Here's Fords answer, note the "standoff kit". That's what I duplicated with longer bolts, threaded a nylock lock nut on, sawed the head off, etc.
Not saying you are wrong, but you do know there is a device that communicates between the fuel pump and the PCM and it's called a "Fuel Pump Driver Module"?
It's located above the spare over on the left side on the rear side of a semi round crossmember, factory bolted it to the frame. It has an aluminum body and the accumulation of road salts, moisture, etc leads to corosion between the aluminum body of the FPDM and the steel frame rail. Some have found their coroded so badly as to have holes in the back side and in some cases broken in pieces.
I removed mine and found only minor corosion,
so I cleaned it and then clearcoated it rather well,
cleaned and then painted the frame there,
and reinstalled it using some home made longer 5 or 6 mm studs I made with long bolts and some spacers to space mine a good 1/4" off the frame.
Below are pics of "not good" FPDMs, it's not so rare. These are not mine.
Here's Fords answer, note the "standoff kit". That's what I duplicated with longer bolts, threaded a nylock lock nut on, sawed the head off, etc.
Senior User
Joined: Jan 2008
Posts: 380
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From: mississauga ont.
I clean mine and add some grease to frame every spring also clean spare tire and clean the key plug in the bumper and put grease on it after its installed
So no surprises when you get a flat.Lots of salt used up here in Ontario CA. in winter.
So no surprises when you get a flat.Lots of salt used up here in Ontario CA. in winter.
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Junior User
Joined: Jun 2003
Posts: 72
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From: Canada
would this cause it to roll and not fire. I hear the fuel pump coming on but it never fires. It did once but ran really rough. I set my Edge EVO box to watch fuel rail pressure and I have less than one pound.
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Junior User
Joined: Jun 2003
Posts: 72
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From: Canada
Well, this has to be my problem. I took it off the truck, it was cracked in three pieces and the circuit board inside is burnt. It's Saturday night now so I cannot get the parts to Monday until try it out. I assume this is it and not the fuel pump.
Hotshot
Joined: Feb 2004
Posts: 10,746
Likes: 2,587
From: The Shenandoah Valley
Junior User
Joined: Jun 2003
Posts: 72
Likes: 0
From: Canada
That was the problem. Thanks for all the help!! My unit was in worse shape then the third one pictures in this post. That new stand off kit is the ticket but I put dielectirc grease and anti seize on everything.
Hotshot
Joined: Feb 2004
Posts: 10,746
Likes: 2,587
From: The Shenandoah Valley
jefff .... worse than the bad in my pics and just now quit? They do seem to keep going on after they should have layed down and died. 
Oh .... Thanks Stewart. I hadn't thought of reps, I'as just trying to help ....
They do seem to keep going on after they should have layed down and died. Oh .... Thanks Stewart. I hadn't thought of reps, I'as just trying to help ....
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Joined: May 2004
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From: Central Coast of CA
Lots of people forget about rep points. I try to "spread the rep love" whenever I see good posts because I've been blessed with rep points by others for the same reason.
Plus, it might be basic knowledge to a lot of you regulars here in the '04+ forum, but I'm on a learning curve so I'll be spreading reps like crazy as I learn!
Stewart
Plus, it might be basic knowledge to a lot of you regulars here in the '04+ forum, but I'm on a learning curve so I'll be spreading reps like crazy as I learn!
Stewart
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Joined: Dec 2015
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Just a helpful hint for 2004 Heritage owners: There is no FPDM on this model. After searching for HOURS under my truck for this part with no luck, I did a bit of research and found the fuel system on the '04 Heritage is the same as on the 2003 model; no FPDM.