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2004 f150 5.4 L3v I have rebuilt the transmission and done a timing job on this truck. someone else did the frame Weld up they did a nice job. But now I need to fix something I don't know much about. So it started with an injector missing and I swapped it out with a new one then I had several cylinders misfiring and got all kinds of Po20X that I didn't keep record of so I don't know exactly what cylinders they were, and I'm not really sure that's all that important. Really to make a Long story short I'm down to trying to determine if I have damaged wiring harness or is it a PCM problem. I am trying to keep this short enough that I don't lose everyone's interest so the problem with doing the pinpoint testing ( such as KG -1 through KG- 6 in the Powertrain Control Emissions Diagnosis Service Repair Manual ) that I need to do to diagnose the issue. I'm just going about it all wrong I'll post some pictures maybe somebody out there can help me figure this out. thank you very muchI
also have been getting the code P0196
I have not been able to find any damage in the wiring
Both the ground wires near the PCM are connected and undamaged
I also checked the ground wires at the kick panel on the passenger side by the fuse box
The only other thing I can think of that is an issue as I have noticed the 4x4 lights on the dash come on when I didn't have the 4x4 engaged.
the colors that are shown do match the truck just not the pin holes thank you for any help I'm using the center connector that should be the one for the engine This is a diagram specific for this truck but there is no wire in the number 38 pinhole #38 pinhole #38 pinhole is missing the wire for the wiring diagram is wrong
Last edited by ditchdigger2; Mar 6, 2025 at 07:27 AM.
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