Ford mechanics, I need help!!

[cbond3318]

That sucks man. Let me know if you need a ride or a tow. I'm around town today with nothing going on....


Cory
509 947 3363

[Woodchuck]

go back and look at my reply # 27 and follow it 

[syoungs]

go back and look at my reply # 27 and follow it 

Now that it's in a failed mode I will be able to 

[syoungs]

That sucks man. Let me know if you need a ride or a tow. I'm around town today with nothing going on....


Cory
509 947 3363

I appreciate that, truck will come home via AAA, luckily a friend was on the way to work right behind me and picked me up.

[syoungs]

go back and look at my reply # 27 and follow it 

Now that it's in a failed mode I will be able to 

With the fuel pump relay being integral to the fuse panel, how would I go about jumping it?

[coachcw]

if its integrated into the central junction block you can go to the inertia switch and check voltage there first .

[C-Money]

Sorry for all your troubles...Hope you get it figured out, as the v10 is a great motor and should serve you well for a long time.

[syoungs]

Trucks in the shop.

Once again it fired right up after the tow truck ride, good voltage all the way back to the fpdm, when running.

I did poke and prod around the central junction box, tapping it with a mallet affected fuel pressure, wiggling wires also affected fuel pressure.

I think I'm starting to narrow it down. Truck died and wouldn't restart, tossed the towel for the night.

I might bypass the entire electrical system by providing batt voltage straight to fpdm to see how it reacts, and start inspecting wire harnesses, I've got a hunch the selenoids may be weak, if so I'll mcgyver a aftermarket selenoid, bypassing the cjb.

[Timberstalker]

Curious if you resolved this Syoungs?

[JJB11B]

I kind  of have the thought that if it is anything outside of the isolated fuel delivery system, you would be showing more than the one code.

This was my thought as well, I do randomly get a code for the evap canister not being able to bleed pressure or something along those lines, I've seen that code one time, cleared it, cleaned up the EVAP system and hasn't been back.

The driver module is new as well, if I can catch it while it's throwing low fuel pressure, I'm hoping to test the supply and ground to the pump, if those are in spec, maybe I'm fighting a bad fuel pump or bad connections in the tank. Really regretting selling my last truck!

you wouldn't be having these issues had you sold the last one to me, Its KARMA. I'm kidding. Everything I could think of had already been said here, Hope you get it sorted out man. Sorry to hear this

[syoungs]

im kicking myself for selling the last one now lol, should have spent a couple grand on a new interior and some paint, and called it a day on that one!

Still haven't fixed it, but this time its just from a lack of trying, my Subaru DD spit a tranny right after this one broke, so I concentrated on getting that back on the road.

got my buddies 6.0 tore apart right now, soon as that's done this weekend im going to start on my ford again.

where I am at with it though;
 Last time it broke down, I was able to check voltage from the central junction box, to the fuel pressure driver module. all was perfect. before I could get to check the fuel pump connection everything started working good again 
This weekend while towing my buddies 6.0 around the property and getting it staged in the shop for repairs, the damn truck broke again, this is the first time it has done it with another body there, I tried restarting, cranking while playing with the under dash harness ( at one point it seemed wiggling that harness effected fuel pressure like there was a short), and finally, the ol tap on the gas tank while its turning over. had my buddy crank on it, as soon as I tapped the fuel tank, it fired right up. Did this twice in a 10 minute period.

SOOO.... back to square one. It needs a fuel pump. I used a replacement pump from shucks, im guessing it was not the proper pump to be used on the ford returnless fuel system, browsing mustang forums (same fuel system design), people talk about a pump that when cycled constantly, will burn out in very short order.

Im gonna order a full replacement setup, probably a motorcraft one, even though the 450$ price tag is hard to swallow, unless someone can offer some first hand experience with a certain brand they have total faith in...

Good news is I have finally struck a deal with my buddy, after his truck is running, we are going to exchange lift kits, I have a 6" kit, and 38" tires, he has a small leveling kit and 35s, gonna order some 295/70r18 to get closer to stock size, hopefully improving the 8.6 mpg 

[syoungs]

Shop day!!



So after triple testing circuits, and load testing the circuit for the fuel pump, I succumbed and bought a new pump assembly. Was going to buy motorcraft, but couldn't justify the 200$+ difference from bosch.

Think the fuel pump was the problem. With the tank on the bench the old pump would appear to flow a decent amount of fuel (don't have a flow gauge or wayy to check pressure), but was rattling and sounded like it was cavatating bad. It would draw 3.5 amps with the tank over 1/2 full. After the tank would drop below the level of the fuel module, it would fall on its face, pump out the module capacity and barely flow any fuel, drawing 2.8 amps.

Put the new Bosch unit it. Draws 5.7 amps, I'm gonna guess at twice the flow, and better pressure. The new pump is dead quiet as well. It'll still pump out the module and flow less amount, but not nearly as bad as the old pump, and sense this system pulses the fuel pump to control pressure, I think it is operating within it's designed limitations.

So, with any luck, the truck will be fixed! Also have a light bar I'm going to mount, possibly put my CB in, though not sure if this truck will get one or not, and apply my new tailgate cover 


Next few weeks is getting new, smaller, tires, and hopefully a reduction from 6" lift to just a leveling kit.

[2labs]

Didn't you get rid of a 7.3 for this 8.6 mpg bundle of joy! 

[syoungs]

I did....

And I still don't fully regret it 

I loved the 7.3, but I like cheap oil changes, getting gas everywhere, no smelly fuel.... The list goes on lol. The truck is in way better shape than the 7.3 was, wife wanted me to get something nice. Happy wife, happy life. 

[2labs]

Understood, carry on!