Hello all, I wanted to share my experience with you all in hopes that this can save some one money and help with repair....

I have a 2004 f350 company work truck. Driver got to the job site and said the truck started and had no power. I went to the job site, hooked up the scanner and I had 3 injector codes and the truck had no throttle response and ran like turd. Codes were P0262 (cyl 1), P0277 (cyl 6), P0280 (cyl 7), P2290 icp too low. So I had to get the truck towed and start working on this. After receiving some help from bismic I fixed it. Im not a certified technician and with the help with this forum I am learning more and more everyday. Here are the steps I did and process of elimination.

I removed the injector harness because it was easier to do this on a work bench. I inspected the harness for any kind of wiring damage and with a multimeter checked continuity from each injector connector to the x1 and x2 connector on the harness. this harness goes to all 8 injectors from 2 connectors on the ficm (the 2 back on ficm. There is also a ground that is part of the harness that is bolted to the intake manifold.

After finding out my harness was good, I proceeded with the injectors. With the same multimeter, I went on to check resistance. On your multimeter find the sign that looks like a horse shoe to check continuity. This is kind of tough and woul help if you had another set of hands to hold the multimeter and give you your readings while you use the prongs to get a good contact on the injectors. Keep in mind you are looking for resistance, not voltage so the injector connector was disconnected. On the injector connector there are 4 prongs labeled 1 thru 4. You need to check resistance from prongs 1 and 2, then 3 and 4. you want 0.8-1.0 ohms. I had injector 4 pins 1 and 2 0.8 and the 3 and 4 give me 0.6. I said to myself that injector is good so found that my ficm was the culprit. You can still have good voltage going to your ficm (48v) but that doesnt mean you have a good ficm. So I contacted my local ford dealer and got a new ficm and the truck ran so much better but I found that the one injector (cyl4) that gave me a low resistance was bad. Replaced that and the truck runs like new.

This just shows that numbers dont lie and there is steps you can do and save yourself money with out throwing parts or having someone charge you a lot with the possibility of also throwing parts. You can easily assume you need 3 injectors because you got 3 injector codes. Hopefully this helps someone. Shout out to bismic and a lot of you guys that give great information and advice. This forum can help a lot of you like its helped me if you take the time to read and be patient.


Thanks FTE!

 

Fuel injector harness

check continuity from here to the big plugs

injector connector (check resistance)

 

Good story, and kudos to you for sharing and giving recognition. Mark helps a lot of people on many forums.

 

You help a lot as well and so does Yahiko I think is his name. That is just to name of few. I appreciate all of that.

 

Yahiko is Sean. He and all these guys have saved me so much money I could never repay them. I literally could not be earning a living; my business model could not be profitable, if I had to pay techs to fix everything that has gone wrong with my trucks. Really, it has become my business model - I buy an auction truck, the guys here help me get it running well enough that I can drive it long enough to earn it's cost back hauling loads, then I sell it for all profit while it's still running strong. Only because of these guys does that work.

To Jack's point, most of our best here can be found on other Ford forums as well. It's crazy, but they love these trucks and love helping people. I guess it wouldn't be appropriate to discuss which other forums might be as good or better than FTE. I mostly just stay here out of habit, so don't know much about the others.

The marketing humanitarian in me says they should monetize their passion. I could see a handful of guys here, for instance, having a crowd-funded site for a custom 6.0L truck rebuild. In exchange for funding their rebuild, they provide the same services they're doing now to crowd members. It might even be the crowd's truck, I guess, legally. Maybe the crowd collects trucks, one rebuild after another, all funded by sharing their expertise, like we do now. FTE could organize such a thing. Maybe regional truck builds that compete once a year.

The trucks could always be sold for profit, or auctioned off, literally self-funding each project after the first one. I'll even donate the first truck.
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Just an FYI. The bolt that goes to the manifold is for the
shield ground and not for power.

 

I said ground

 

If I could be so bold as to answer for Sean - he means it is the shielding ground for the harness, not an actual FICM ground.

 

Just got home and you hit that right on the head.
Shield ground tend to be less robust that a system power ground. You try to run 50 A on the shield and you will likely cook it and something else along with it.

 

ooo my bad. I stand corrected. I should have mentioned that. My bad still a newb

 

Nah, you just stand informed, equal with the rest of us who all had to get "informed" at some point.