first off...the last couple of test drives, I've been with them and they've had the puter hooked in, they replaced the back pressure sensor AND cleaned the tube...absolutely no change. I got about 40 miles down the road, with a delivery on board, mind you, when the SES light came on and it started losing power again. I managed to limp back home, transfer the cargo to my smaller E350 box and make the delivery to North Carolina (on time I might add). Secondly, Allegheny Ford seems to be the only one in this whole area that has the facilities to work on 20' box trucks. I talked with a tech from Hunter Truck Sales and Service, and although they admit they could probably do the engine work, since its an International built engine (I assume) they can't read through the Ford electronics, which sounds to me more BS than fact. HOWEVER... on the way back from the NC run, I kept thinking about this thing and maybe...just maybe, I received an epifany from the Great and Almighty Diesel God. In all the trips to Allegheny Ford, they have not once, checked out the electrical system! It would seem to me, although I am simple-minded in this matter, that if, and granted its a big "IF", the wiring circuit leading from the PCM to the IPR was intermittently shorting out, was frayed or corroded somewhere along the line, then the "instructions" being sent to the IPR would be corrupted in-route and thus the IPR would be getting "bad" instructions. The P1211 seems the one constant code in all this, and with the IPR already having been replaced TWICE, Would the most common denominator here be something in the wiring?? Being that the problem started out as a rare occassion and has become more constant. Time before last, it lost power COMPLETELY, leaving me at a dead stop inside the Squirrel Hill Tunnel after about 5 miles of total driving. This last time, I was able to limp home, about 50 miles, managing to keep about 35MPH max. I returned it to Allegheny ford last week (as of yesterday they hadn't looked at it yet) with a list. Topping that list was to check the electrical system/wires/connectors. One of the local geniuses looked over the schematics and found a "PCM Relay" that appears to have a direct connection to the IPR, and said that it (the relay) could be going bad. His "partner-in-crime" said "no, if that was the case, the PCM would not power up."
The 1211 code also note a probable cause as a leaking HPOP, injector O-Rings etc...if those were leaking, wouldn't they leak ALL the time rather than just occassionaly?(noting here that in October, I went from Pittsburgh to Houston, on to Tucson, then up to Sacramento and from there to Up State New York and back to Pittsbugh, the SES light came on twice and no loss of power at all) It seems to me, and again I'm a semi-idiot here, that since none of the other "possible causes" seem plausable, and the other "fixes" haven't been, about the only thing left that would make any kind of sense would be something in the electrical end? What think ye all? Is this reasonaby possible or should I just have this thing declared a Lemon and buy a horse?
Last edited by howardtm : 02-10-2007 at 08:38 AM.