I started throwing codes in the diesel recently, only i didnt know what they were!
As im sure anyone with an OBS 7.3L knows, the OBD-II implementation in these trucks is pretty spotty, which made this one a little frustrating to solve. I started getting a CEL that would appear & disappear and not throw a code (confirmed or pending), but the idle would change when it set. I figured ICP, so pulled the connector and sure enough there was oil in there, so i assumed that was the problem, bought a new OEM one, and slapped it in. It wasnt the problem.
I started digging a little deeper and found in Continuous Memory code P1211, "ICP Higher/Lower Than Desired (engine running)". So now im figuring either my IPR or HPOP is failing. Cant get live data from the PCM with my scanner, so i figured id just yank the IPR out and inspect it.
In case you dont know, removing this required removal of the fuel bowl. Its a fairly daunting task if you havent done it before. The last time this one was out was ~10 years ago, so i was a little rusty on how to do it, but honestly its not too bad.
I immediately noticed something funky going on. It like the silicone boot for the plug turned to goo inside the socket:
The plug for the IPR is on a short harness connected to the fuel bowl. With this removed from the truck, it was easy to inspect. And it looks like weve found a problem!
Well, surely thats our problem!
So i did some research and then called the local Ford dealer. Turns out they had the pigtail in stock, along with all the short fuel hoses you need to reinstall the fuel bowl! So i made a run up there and picked everything up. Fast forward a day, and we're ready for repair!
So here's the replacement pigtail from Ford, p/n 6E7Z-12A690-DA.
It comes in a bag with some crimps and shrink sleeving, but i opted to solder it, and use my own shrink sleeve, as i have adhesive lined
I disassembled and cleaned the IPR while it was out (i should have taken pics, but i was a bit oily at that point), and then reinstalled it. Fuel bowl went back in with all 4 hoses replaced plus the short one for the drain, and i cleaned all the sediment out of the bowl. The HPOP resevoir had been drained so i put about a half quart of new oil in there so it wouldnt try to start dry, and then fired it up!
It did initially pop a CEL, but i attribute that to there being air in the fuel & oil systems. I let it idle for a while, then turned it off/on, and problem solved! Runs great now, and no CEL.
Upgrading to the Superduty UVCH + valve cover gaskets:
Removed the engine harness:
..and rewiring it for the SD valve cover gaskets:
...and all done!
With that done, all that was left was to install the harness, batteries, fender liner, and throw some fluids in it! So i got all that done today, purged the fuel lines, and got her running!
...Then i went thru the yard, and filled the bed of the truck with downed branches from the winter
So i figure ive got a good weeks worth of work of cleanup to do, but i expect to be working on the big bronco again before the end of the month!
Made some progress this morning, before the weather turned sour.
Exhaust manifold in, along with up-pipe, which you totally cant see, but its in there!
check these rocker arms!
Valve train installed. Down-pipe is reinstalled too.
All new orings and washers on the injectors:
I got all the injectors reinstalled, but by then it was raining pretty heavily. Hopefully tomorrow its a bit dryer out!
Figured the head was off, might as well do valve stem seals:
I had one cracked injector cup, so i replaced all 8
7.3 has a two-stage fuel pump in the valley, and uses a single hard line to supply fuel to the back of both heads:
I wanted to replace mine since it has a kink on the passenger side, and the rubber collars behind the nuts are rotted after 24 years. Well, you cant do it with the turbo installed!. It also uses the biggest banjo bolt youve ever seen!
i had to order a set of metric 1/4" drive swivel sockets to get the turbo out, as nothing else will fit in there to remove it. It is god damned tight in there:
That wasnt the worst either. No way to do it w/o them swivel sockets.
Turbo out, new fuel line + pedestal o-rings installed:
...and finally, turbo reinstalled!
Got all that finished up this morning. Weather permitting, monday morning i should be good to start reinstalling the head!
I broke a glow plug a couple weeks ago when i was trying to replace them. Couldnt get the last piece of it out of the head, so.......
That was yesterday. Hopefully next week ill be able to put the head back on. OEM head gaskets & bolts, OEM exh manifold gasket & bolts. Had a cracked injector cup so theyre all getting changed (bought the kit from Rosewood Diesel to do it). Doing valve stems seals, because she's at 201k & the head is off so why not. Also have the parts to convert the truck over to the Superduty valve cover gaskets + UVCHs (Under Valve Cover Harness for you non-diesel guys).
So the dump bed works pretty awesome!
You cant really tell, but theres a yard of stone in the bed.
I didnt shoot any vid of it dumping, didnt think of it at time, was more concered with watching it, since a yard of stone is ~2600lbs. ive used it a couple times now, it is super awesome.
The green tailgate presented a problem though. It was a necessity as my original tailgate got smashed, but its bowed pretty badly, and i was losing stone on the way home. So, i dug out a shell ive had kicking around, and decided to see what i could do with it.
Made some progress on the water/meth injection! My wiring harness uses 7 wires, so rather than build an extension, i bought 7 wire trailer harness:
More OEM wedgelok pins being put to use
Original harness on the frame:
...and the new extension plugged in and looking OEM
The harness runs up the bed here. Next to it is a hydraulic hose connected to some 3/8 stainless tube via some swagelok fittings for the water.
The route up the bed:
Another OEM connector, where my extension harness ends in the toolbox. In the top left you can see where the tubing enters the box. 100% stainless tube from the bed hinge to the toolbox.
The original toolbox harness modified with a mating wedgelok connector installed:
...and the whole water/meth system is now reinstalled and done!
I turned the system on to check for errors and didnt find any, so i removed/cleaned the injector and then purged the system. Holy shit i think were done!!! I still need to find a place to relocate my CB antenna to, but aside from that she's 100% done!
After sitting for 7 weeks under a black walnut tree the truck needs to go to the carwash pretty badly, so i guess thatll be my test drive to see how badly the bed rattles around.
The kit comes with these guides to keep the front of the bed aligned with the cab, but i never installed them because my hinges are so much more sturdy than the ones that came with the kit, and the bed doesnt flop around like it woudve with their hinges. So we'll see after the test drive (hopefully tomorrow) if i need to put them on or not.
Bought a piece of unequal angle (3x4) from the scrap steel yard to begin mockup for a bumper
So heres the rough idea:
Seems awfully small, but with the bed tilted, you can see its a tight fit
No room for a license plate on the bumper
Trimming the corners
Adding a piece of 2" plate to the bottom
Now its starting to look like something:
All done and ground
For lack of a better place, i put rivnuts in the tailgate, to hang the plate off it. This gate is beat up anyway, so not too upset about drilling holes in it
All done & painted!
While i was waiting for it to dry, i fixed my trailer wiring. Turns out Clips & Fasteners sells replacement pins for Ford Wedgelock connectors. Male + female, and both the large and small pins. They get crimped on using the same tool as weatherpaks do, which i already have. Since i had broken wires i cut all of them back to fresh copper and repinned all of them
So all thats left is to bolt it on, and its done!
Its a tight fit against the hitch:
Look closely, youll see the bumper brackets all but touch the hitch, and there is actually a vertical groove in the bumper to clear the hitch. Its tight!
The bumper is a little smaller than id prefer, but as big as i can make it. Overall i think its looks pretty good on there though. So thats two more items off the list! So next week i need to tackle the water/meth injection, move my CB antenna and then i think im done!
Ok, so weve got 4 main projects left to finish this thing. Gotta solve the bumper problem, fix trailer plug wiring, rewire/plumb the water/meth injection, and relocate the CB antenna. Well, ive got 2/4 done now.
All this work on the bed; so i decided to work on the bumper. Since its got to pivot with the bed, i started building brackets to attach to the hinges:
One bracket done, shown attached to the bed-side half of one of the hinges. It attaches to the 5/8 hinge pin, plus 2 bolts up thru the hinge and into the bed. Should be sufficient.
Both brackets done, + hinges finally in paint!
Now to design a bumper.
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