Mine is a 8/03

 

Well in that case I do not believe I have helped very much. Just keep on searching there has to be a logical explanation for your problem. I will look at my prints again and see if a light bulb comes on.

 

well the pos is finally dead on side of the road where it belongs

 

was going down the road and it slowly snubbed its self out as if it ran out of fuel (was low but not out) pushed to gas station put fuel in pulled fither to make sure was primed cycled key few times got it to kind fire up would barly run wot would barly idle but just chugged the blackes smoke you ever seen so much the attendent came running out got it to clear up drove about 2 blocks did it again did same thing 3 times till the last time it wouldnt start again i did notice the bk/pk and dg/lg (power and ground for ficm) in connector c1282 were so hot including connector was hard to hold in hand pushed to parking lot and its still sits there any ideas or help would be great

would the ebp cause a symptom like this?

 

i am having the same problem with my 06 same codes as well, i bought a new pedal set but didnt fix it, what did you end finding out with yours?

 

Bringing this back to life. Did either of you figure this out? Same issue with my 06 now.

 

If you would have clicked on their profile you would have seen one hasn't been on the site since 2011, and the other since 2013. So, you're not going to get an answer.

 

Yeah, I saw that. Was hoping they'd get an email notification haha

 

Anyone found out the issue ? Got same symptoms as described

 

What year and model of 6.0L?

 

late 2004 but engine is 2005 f550, got vmac under hood

 

Hmm - Under-hood air. That may affect things (wiring).

With a stock 6.0L in an F-series:

There is a harness crossover under the air filter, at a stud on the corner of the valve cover that can cause problems if the clip on the harness is missing and the stud is poking the bundle. Also, near the steering column, where it goes through the firewall, or at the accelerator pedal pivot point, lastly the PCM harness can chafe at/near the PCM or at Connector C145 or C1010. Also, can get this code from a shorted out EBP sensor (along w/ an EGR code and possible ICP, Baro, and MAP codes) due to shorted out v-reference circuit 351.

Monitor v-reference voltage! Post back what it is.
You can disconnect many v0reference sensors and see if it helps (EBP, ICP, EGR valve are the most failure prone)

 

Wondering if you would mind helping, have the same issue. I have read through many threads on the various forums about this and haven't been able to figure it out so far. Picked this truck up from friend whose family member (owner) passed
Late 04 automatic. P2138 p2139 p2140 p2104
Egr delete unknown if tuned has full banks kit and unknown brand fuel pump/filter kit which seems to be shorting somewhere, possibly the pump as the relay is melting its connector, i will be replacing with a fass eventually and removing the **** wiring. Engine harness looks like someone has rewrapped it with new tape so possibly a cleaned up used harness sold on ebay?
While watching acc pedal 1 2 3 and ref voltage pids on my scanner I wiggle tested all of the connectors on the fender liner and the crossover harnesses laying on the valve cover, the pcm connectors and wiring underneath as well as the acc pedal connector/wiring leading under the dash and wiring behind the dash fuse block but found nothing. Looking at the diag procedure in the first post my voltages were app1 closed 4.09 app2 closed 1.33 app3 closed .81 app1 wo .52 app2 wo 3.22 app3 wo 3.54. Being that app2 was off at closed by .05 and .23 at wide open I chanced it and picked up a dorman replacement the new pedal readings; app1 closed 4.06 app2 closed 1.42 app3 closed .88 app1 wo .59 app2 wo 3.25 app3 wo 3.56. closed is in range now but wo still is off by .2 and when I clear codes as soon as the pedal is pressed with engine off only p2138 and p2140 come back before test drive, im sure p2104 would come back if test driven.
Do you happen to have the rest of that diag procedure in the first post as Iwould like to follow the rest of the path at the bottom where it says to go to "ag17" as app2 was off at wo. Thanks in advance!!

 

These are from a 2006 manual.

 

Appreciate it! Unfortunately I think the pedals and possibly wiring are different. I have a 2006 although it is a manual the pedal and connector are different and looking at the voltage ranges between the 1 you linked and the 1 in the first post they're different. Do you have a pinout of the app sensor connector? I have 1 for the 04 so I can verify if they change and test accordingly.