2006 F-350 6.0L throwing codes

[jpinkston70]

My recently purchased 2006 F-350 6.0L is throwing three codes: p0232, p0266, and p0299.
It started running rough the other day when the temperature dropped well into the negatives. My phone was saying -17 for a low. Could gelled fuel be the cause? I use stanadyne additive in my fuel. I'm not sure if I used enough or not. I'm just wondering if it might have gelled, clogged the fuel pump and maybe some of the gelled fuel made it to the injector on cylinder #2 which caused it to run rough and starve the other injectors of fuel and make the turbo not spool up like it should. Any insight as to why it is giving me those three codes at the same time would be greatly appreciated. I'm changing the fuel pump tomorrow.

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[kaya@bernhausen]

the fuel shouldn't gel if the truck's running. since engine temp would keep it from doing so. more of an issue with start up.
i would check/test your fuel pump relay. a failed relay could definitely cause these issues

[jpinkston70]

Well I turned it off and that's when the problems started. I was trying to start it to move it into the diesel shop so the guys could run their scan tool on it and it wouldn't start back up. How can I check the fuel pump relay and what else can I do. I really hope the injectors are not going to crap on me. This truck already has blown head gaskets too.

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[Wannabitawerm]

Sounds like the previous owner dumped it before it went too bad. I'm guessing this hasn't been studded and deleted either?


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[jpinkston70]

It has an EGR delete, 4" mbrp exhaust and a superchip programmer set to performance and a 4" lift. No studs hence the blown head gaskets. The truck only had 110,300 miles on it when I got it. I've only put 300 or so miles in it so far and all this is happening. Since I've had it I've replaced the thermostat and had cracked up pipe fixed. As soon as it warms up a little today I'm going to replace the fuel pump and see what happens and what codes pop up. I'll keep y'all posted. I honestly believe the guy I bought it from had no clue about these engines.

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[kaya@bernhausen]

well hold on now. if the problem is the relay, the pump won't fix it. and we haven't even deduced that the problem is fuel supply yet.
cycle the key on and listen for pump operation under the front door, drivers side frame rail. if you hear it cycling on, pull the secondary fuel filter cap off and have a look in there. see if there's fuel. cycle the key on and see if the bowl fills.

[jpinkston70]

The guy at the diesel shop listened it it and it didn't make a sound. I just replaced the fuel pump under the drivers side cycled it several times listened to it and it worked. Checked the fuel bowl under the hood and it got fuel. I fired her up and she sounded and ran good like normal. Checked the codes and they all were gone. I let it warm up for a bit and before I took it for a test drive I checked the codes again and it gave me p0269 which is cylinder #3 contribution/balance. Could the FICM be malfunctioning? If I'm correct, correct me if I'm not, the FICM is the Fuel Injector Control Module? The truck runs good as of right now.

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[kaya@bernhausen]

starving the injectors of fuel is very hard on the mechanical components inside the injector. damage may have incurred. a bad ficm will usually throw a circuit low code. not to say it isn't a possibility. but it's more likely the injector itself

[jpinkston70]

Yay just what I need right now injectors head gaskets and head studs. Starting to think that buying this truck was a bad idea. Oh well I've always wanted a project vehicle and I finally have one lol. I'm done tinkering with it for today, I'll probably work on it some later in the week. In the mean time if anyone has any input or suggestions feel free to pitch in. Thanks everyone that has already given help and advice. I really appreciate it.

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[jpinkston70]

My Edge Insight CTS said my FICM has 48.0 volts when running so I'm guessing I have a bad injector in cylinder #3. I cleared it but it popped up again. The truck isn't blowing any smoke at all, so I'm guessing that's a good thing.

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