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7.3 L Woes
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Official CCB Member   Joined: Mon Jan 03, 2011 2:59 pm Posts: 1940 Location: Witness Protection Program 
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 7.3 L WoesAbout two weeks ago I was driving my 03' F-250 down the road and it began running rough and then got a CEL (code 1316). I was in the process of moving and just decided to get moved and deal with it after the move. I got into the truck on Thursday and found some a-hole decided to try and steal it from me. I replaced the ignition cylinder and finally got it back to square one where I could start it again. I've done the 50 cent fix but I still think it's the UVCH. Any thoughts or ideas?
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| Sat Feb 25, 2017 5:13 pm |
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Official CCB Member  Joined: Tue Oct 05, 2010 9:30 pm Posts: 708 Location: Greeley
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Re: 7.3 L Woes The under valve cover harness kinda sucks to get at. The wires leading up to it can wear through but I'm guessing you already checked the exposed wires for damage or worn insulation. If you suspect the injector drive module itself, I should have a spare that you could borrow to trouble shoot it.
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| Sat Feb 25, 2017 8:23 pm |
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Official CCB Member  Joined: Wed Oct 27, 2010 6:25 pm Posts: 4901 Images: 0 Location: Colorado Springs
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7.3 L Woes Whip out the multimeter and check resistance at the entry point to the valve cover gasket and harness. Glow plugs should ohm out around 0.8-0.9 each. Injectors should ohm out around 3.6. Anything above 10 or so on the injectors and you need to pull the valve covers and replace the gasket, UVCH, or both.
Add just a little dielectric grease to the pins on reassembly but not too much or you'll wind up crossing a circuit with the goo and have to do this again. _________________ Stroppe'd 1972 Sport, 302, 3 speed with old school Duff floor shifter, T shift Dana 20 with JB Fab twin stick, 4.11 gears with Trac-loc, Lincoln hydroboost, Chevy disc conversion, WH gas lift gate shock kit, 33" Duratrac tires on slots and about 2.5" of lift, Stroppe installed: bumper braces, dual shocks on all four corners, GM power steering, trans cooler mount, auto shift column, rollbar. The Terrible One 1972 Sport uncut, 302, C4 with 1974 column , T shift Dana 20, 3.50 gears w/ limited slip, 1966 U13 Roadster kick panel, and factory power steering. 1973 Stroppe Baja project |
| Sat Feb 25, 2017 10:35 pm |
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Official CCB Member Joined: Mon Jan 03, 2011 2:59 pm Posts: 1940 Location: Witness Protection Program
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Re: 7.3 L Woes Jeremy I'll get back to you after I ohm out the harness, thanks to both of you.
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| Sun Feb 26, 2017 5:07 am |
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Official CCB Member  Joined: Thu Nov 11, 2010 10:36 am Posts: 5984 Location: California
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Re: 7.3 L Woes First, sorry someone tried to jack your truck!
 I h8 lowlifes like that!!!Anyway, sounds like you are on the right track. When it does start, how does it run? Here's a video you may have seen. https://www.youtube.com/watch?v=GHwjEfJ ... r_embedded _________________ 1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow. http://www.ucora.org |
| Mon Feb 27, 2017 9:00 am |
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