P1272 question - Ford Powerstroke Diesel Forum
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Old 12-12-2010, 09:59 AM
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P1272 question

I definitely can feel a miss when the truck runs, and the service engine light is on. My neighbor read the code, and came back with P0603, P1316, P1247, and then after some sort of self test (I think) P1272. I checked the resistance between the pins on the ucvh for what I believe is cylinder 2 and get 3.1 I tested between center pin, and 3rd pin from front. I assume that since cylinder 2 is front, that it would be the front most pin for the injectors? I think from searching that the 3.1 value is good. I will try a buzz test this afternoon, Can I check the wiring going from the connector for the uvch back into the harness? how would I do that. hate to through a couple hundred in and replace the injector if it is a wiring issue. If it helps, I did replace my glow plugs 2 weeks ago, and have driven maybe 2 or 300 miles since then. I did check all the connections on the injectors felt tight by touching them while i was in there.

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Old 12-12-2010, 11:41 AM
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Ran a buzz test all cylinders sound the same to me. Does that mean the harness and connection to the injector are good? I thought from my reading that P1272 was an electronic issue, could I have a bad injector? The miss is not as evident when the truck is not warmed up, but I can still feel it, and the check engine light came on right away, could the harness start failing after the motor warms up
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Old 12-13-2010, 11:28 AM
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Smile think I resolved it

It was gong to take until Tuesday to get a new harness and injector. I needed to move some stuff, so i went ahead and put it all back together and added the little spacer thing to the inside snap on the harness, and cleared the codes. I drove about 40 miles around town, I had one miss fire and saw a P1277 in memory when i got home, but everything seems to be running normal again. hoping I don't have to pull the other side and add the same spacer there, but way cheaper than an injector.
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