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7.3 throwing codes..stuck 1200 miles from home!

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7.3 throwing codes..stuck 1200 miles from home!

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  #1  
Old 10-06-2017, 09:22 PM
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Unhappy 7.3 throwing codes..stuck 1200 miles from home!

I have a 2000 Ford Excursion with the 7.3 in it. Well, it decided that it's going to strand me 1200 miles from home and throw 2 codes. P0267 and P1294. It'll start and run, and be perfect, then just loose all power, and run super rough. and go back sometimes to running good, it has a mind of its own. When it's running good, It's like there is nothing wrong, but when it doesn't run good, it won't haul itself up a small hill. Any hints to when it could be would be awesome since I'm stuck in Maine until I can get it to work enough to haul me and my gear home!!!!

Extra info, I only got those codes by running an injector buzz test. I had to get it towed, and the tow company let me use there snap on scanner tool for an hour.
 
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  #2  
Old 10-06-2017, 09:31 PM
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Hows your oil level? Unplug your ICP and see if it runs "better" also hows your fuel level? Clogged up pick up screens in tank could be clogged giving you low fuel pressure.
 
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Old 10-06-2017, 09:51 PM
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I'm about half full on my fuel tank, and my oil level is NOW good, it WAS low when I got in to town (whoops) had to add a quart and a half.. in fact this all started after I brought the oil level back up to better levels. I also changed the fuel filter before I scanned it for a maybe quick fix.
 
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Old 10-06-2017, 11:17 PM
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Have you done the 50 cent mod or new uvch's? Sounds just like a 7.3 I had once when it lost a bank.
 
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Old 10-06-2017, 11:30 PM
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I'm thinking the connector for the UVCH is loose or burnt. What you are describing is consistent with that issue, and it is easy to check with very basic tools.
 
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Old 10-07-2017, 07:19 AM
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I was going to say UVCH also.
 
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Old 10-07-2017, 09:37 AM
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We, guys I'm going to go and try and mess with the harness today!, I'll check back in later and let you know if I found something.
 
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Old 10-07-2017, 09:48 AM
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Also, If anyone is in Central Eastern Maine, I'll reward ya to come help me get home!!, I'm on day 3 of this little
SNAFU.
 
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Old 10-07-2017, 12:59 PM
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I know what it is like to be stranded far away from home ! You have a lot of brothers here to help you out.
Check the bottom of the wire harness that lays on top of the drivers side valve cover, This is known to rub the valve cover and short out the injector wires.
Also you can take the 42 pin connector apart and ohm the wires to narrow down your search. The directions for this are attached. (I hope)
Good Luck !

GB_Tech_Bulletin_103_Ford IDM_Module_Replacement (1).pdf
 
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Old 10-07-2017, 06:28 PM
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Well, I'm up and running guys. It was UVCH, I took the cover off in the parking lot, and touched the wire harness it fell out!!, so put it back together and did the 25 cent mod. So far, everything seams to be ok. Thanks for leading me in that direction.
 
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Old 10-07-2017, 07:41 PM
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Do yourself a favor and make that the first thing you replace when you get back....(both of them) just sayin.....
 
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Old 10-07-2017, 08:07 PM
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Originally Posted by coax9952 View Post
Do yourself a favor and make that the first thing you replace when you get back....(both of them) just sayin.....
Why? Don't trust the quarter?

Just asking because my 02 with 560k miles on it has had the 50 mod since 2008 using the factory valve covers with no issues.
 
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Old 10-10-2017, 11:54 PM
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Originally Posted by F350-6 View Post
Why? Don't trust the quarter?

Just asking because my 02 with 560k miles on it has had the 50 mod since 2008 using the factory valve covers with no issues.
One oddball failure can be the female side of those UVCH's for the glow plugs. The glow plugs can draw enough power that as the connectors slowly back apart, the connectors can overheat around those pins. When you plug it back together, the glow plugs may not all function due to the loose connection. The injectors don't usually have this problem, because they draw less power.
Larry
 
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Old 10-11-2017, 06:58 AM
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Common problem




Fifty Cent Fail



Damaged center pin on gasket - total passenger side fail

 
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Old 10-11-2017, 07:11 PM
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Originally Posted by Tugly View Post
Common problem




Fifty Cent Fail



Damaged center pin on gasket - total passenger side fail

I've seen that photo before. And it's common for the plug to be that loose weather you use the quarter or the Ford shim offered for more money.

Are you sure the center pin wasn't compromised before the shim was installed? Based on your photo, the glow plug pins on the left should have been the first to go if it was actually that loose.

Besides, how many stories have we read here about a loose UVCH that was plugged back in and shimmed by whatever means chosen and everything was fine again? And fine again for many, many years or miles? Those threads have been going on for years.

You've got a stronger background in electronics that I do, but I'd wager the center pin connection in that photo was compromised before the quarter was installed. The quarter shimmed connections on my 02 looked the same as your photo and worked fine for the last couple of hundred thousand miles with no issue.
 
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