UVC harness diagnosis - Ford Powerstroke Diesel Forum
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Old 03-10-2009, 06:24 PM
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UVC harness diagnosis

Would a bad UVC harness create a miss, or skipping condition in the motor, almost like a bad injector but not as bad?

and might it not show up on a code scan or contribution test?
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Old 03-10-2009, 06:26 PM
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Send a message via AIM to cchase
its possible.
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Old 03-10-2009, 06:42 PM
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i figure since it's such a cheap part, i may as well rule it out.
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Old 03-11-2009, 04:26 AM
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$62 each sound right for the UVC harness???
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Old 03-11-2009, 04:34 AM
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I don't think i spent that much thru International.
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Old 03-11-2009, 06:02 AM
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whats going on with your truck? my truck randomly one day just stopped working on bank two. i checked the connectors outside the valve cover and made sure there wasnt any burning or corrosion on the connector, of course that wasnt it. a buddy of mine had a similar issue just different bank and it turned out to be the IDM. i ordered an IDM and that didnt fix it.. final straw i pulled the valve cover off and saw that the connector that plugs into the UVC was just a c-hair twisted and had a bad connection. if i didnt know that was a problem with this i never would have seen it or figured that was the issue. i clipped it back in and wah-lah. the truck ran awesome. even better with the modded IDM.
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Old 03-11-2009, 06:13 AM
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Quote:
Originally Posted by PowerSTOKED_Bryan View Post
whats going on with your truck? my truck randomly one day just stopped working on bank two. i checked the connectors outside the valve cover and made sure there wasnt any burning or corrosion on the connector, of course that wasnt it. a buddy of mine had a similar issue just different bank and it turned out to be the IDM. i ordered an IDM and that didnt fix it.. final straw i pulled the valve cover off and saw that the connector that plugs into the UVC was just a c-hair twisted and had a bad connection. if i didnt know that was a problem with this i never would have seen it or figured that was the issue. i clipped it back in and wah-lah. the truck ran awesome. even better with the modded IDM.
theres a slight skip or miss all through the rpm range, noticable at idle, almost as if it's a bad injector, but everything checked out with all the scan tests and all. no codes either. all the power is still there, just a miss in it. more noticable when you're standing at the drivers door. i'm at a complete loss in terms of diagnostics, so now it's back to replacing parts and hoping it'll fix the problem.
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Old 03-11-2009, 06:29 AM
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I'm never sending my father as a parts runner again. with my checkbook at least. the guy at the shop said the valve cover gasket is electronic as well. if you don't change the gasket, it could create the same problem, even with changing the harness. so apprently now i have 2 new harnesses and 2 new gaskets sitting at home... all to the tune of $280.
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Old 03-11-2009, 06:36 AM
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Quote:
Originally Posted by Hawker View Post
I'm never sending my father as a parts runner again. with my checkbook at least. the guy at the shop said the valve cover gasket is electronic as well. if you don't change the gasket, it could create the same problem, even with changing the harness. so apprently now i have 2 new harnesses and 2 new gaskets sitting at home... all to the tune of $280.
next time have him go and pay him when he comes back. lol
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Old 03-11-2009, 06:39 AM
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That is to funny. I was told the same thing and bought every thing. I think you're dad did the right thing. You will be amazed at how much better they snap together and hold tight compared to the OE.
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