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  1. B

    6.0 running rough, no throttle, no hot start

    Not uncommon for an o-ring on the primary fuel filter to cause a no-start. Either the o-ring on the WIF drain or the filter cap o-ring. It is hard on the injectors when you get air in the fuel. Good that you found it quickly.
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    6.0 running rough, no throttle, no hot start

    I really wouldn't expect much at all. If you do feel a little hestitation at first, I wouldn't be concerned.
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    6.0 running rough, no throttle, no hot start

    Glad to hear! I would run it awhile, including a number of reasonably hard accelerations, to clear the air out. Then clear the codes and see what (if anything) comes back.
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    6.0 fuel problem

    Also that red vacuum relief valve (on the side of the "shower-head" assembly) falls out sometimes! It is at about the 1/4 to 1/8th mark. When it comes out, air will be sucked in at that level. Also, you can pull the sending unit out by just "jacking up" the bed. It doesn't have to be...
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    6.0 running rough, no throttle, no hot start

    That will be money well spent!
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    6.0 running rough, no throttle, no hot start

    Just as an fyi - that FICM harness is expensive .... around $250 to $300. I don't want to tell you that it is bad without knowing for sure. At least not for that kind of money! Common chafe points: Upper left valve cover or valve cover stud near the FICM Intake manifold bolts where the...
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    6.0 running rough, no throttle, no hot start

    Based on what you said (harness wiggle test), it sounds like a likely problem. Trouble is, over the internet it is hard to rule out a bad connector on the harness or even issues with the FICM plugs. Removing the FICM to get a close look at the plugs/connectors would be good. Check for bent...
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    6.0 running rough, no throttle, no hot start

    It would impact injector firing, so you could get injector contribution codes and even injector electrical codes. Since fueling was impacted, it could also lead to fueling related codes.
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    6.0 running rough, no throttle, no hot start

    IMO a FICM harness or plug issue (or the FICM itself) could be causing your problems.
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    6.0 running rough, no throttle, no hot start

    If it was 1,4,6, and 7 then it would be the end plug on the FICM (towards the firewall).
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    6.0 running rough, no throttle, no hot start

    Were the dummy plugs OEM from a dealership? I am not an "OEM on everything" person, but I do believe in picking and choosing the things that should be OEM only. Hadn't really given aftermarket dummy plugs much consideration - just wondering! Oh, and compliments to you sticking with the...
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    6.0 running rough, no throttle, no hot start

    It could be the issue and they do need changing!. That teflon ring is to support the rubber o-ring. I don't believe it is there to seal, but if it isn't intact, it could allow the rubber o-ring to leak. Quite frankly it is the first time I have seen anything about the new style dummy plugs...
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    6.0 running rough, no throttle, no hot start

    Well I can't see anything wrong w/ the sensors and v-reference looks good. Your rpms sure drop off though. That pretty much leads me back to the FICM or the HPOP. Can you get ahold of a known good FICM? If not, FICMrepair.com is honest and can test yours. Regarding the HPOP, the best test...
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    6.0 running rough, no throttle, no hot start

    Having it unplugged wouldn't be causing the codes. No need to worry about that being an issue.
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    6.0 running rough, no throttle, no hot start

    Yes, watch the v-ref at all conditions, KOEO, cranking, and running. It should be stable and not far off of 5v. Edit - Here is another link https://www.powerstroke.org/forum/engine-911/359866-2004-6-0-dying.html
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    6.0 running rough, no throttle, no hot start

    Here is a thread w/ similar codes. https://www.powerstroke.org/forum/6-0-motor-problems/1246322-03-gremlins-intermittent-no-crank-no-start.html IMO it was a v-reference circuit problem for the OP in that thread. ICP and EBP are the most common areas for v-ref problems (short circuits), but it...
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    6.0 running rough, no throttle, no hot start

    No. Next step is v-reference check.
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    6.0 running rough, no throttle, no hot start

    I think those instrument cluster codes are out of the ordinary. Especially rpm code and transmission position. The instrument cluster plays a bigger role in the PCM processing than you would think.
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    6.0 running rough, no throttle, no hot start

    Remember I am not a big fan of the Torque Pro for reading codes ......... Maybe disconnect the MAF and see what happens.
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    6.0 running rough, no throttle, no hot start

    Good question on engine load. IIRC, it looks heavily at your MAF sensor. The MAF air sensor is also an input to the turbo controls.
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    6.0 running rough, no throttle, no hot start

    I am not 100% sure as to what all controls VGT%. I do know that EBP, MAP, and Baro contribute heavily. Your values on these three looked fairly normal. There are other inputs I am sure, I just don't remember them without doing a ton of searching. Sorry but I don't have the time for that...
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    6.0 running rough, no throttle, no hot start

    I guess you could have a leaking injector top seal, but the ICP and IPR values aren't all that bad IMO. Others may feel differently though. In a tough situation like yours, an air test is always a better choice than just replacing parts. Edit - thanks for adding cam/crank sync!
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    6.0 running rough, no throttle, no hot start

    PID: 221155 Long name: Calibration Input Voltage Short name: VREF min. value: 0.0 max value: 5.0 scale factor: x1 unit type: Volts Equation: ((A*256)+B)/13107 header: Auto
  24. B

    6.0 running rough, no throttle, no hot start

    Another couple of things that stand out are your load percentage being every high for just idle conditions, and the VGT% occasionally being 9% and 85%. Those aren't normal IMO.
  25. B

    6.0 running rough, no throttle, no hot start

    Not if it is a logic board in the FICM. As stated earlier, that problem can happen without a way to detect it other than put in a known good board or sending it off to a shop like FICMrepair.com for testing. I am not saying that it is for sure your FICM, just a possibility. Don't forget to...

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