01 coyote swap electrical issue

[juandiaz2006]

Good afternoon my name is Juan and I have a 01 mustang Coyote swap. I recently ran into some error codes and cannot figure it out . These codes all popped up at the same time . Vehicle runs and drives pretty well. It’s lean at idle but clears up when you give it gas. Any ideas on what I can check ?

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[Mike Pfeifer]

Well I would at least check if those open circuit faults are true and are in fact open circuits. Since they all happened about the same time, what you find there could likely point to the rest of the problem. That said, this sure looks like a “harness melted onto the exhaust” or similar type of problem.

 

[juandiaz2006]

[QUOTE="Mike Pfeifer, post: 4423720, member:

how do I go about checking the circuits ? And if it could be a wiring issue that maybe melted is there a way for me to check without having to individually check wires ?

 

[Mike Pfeifer]

[QUOTE="Mike Pfeifer, post: 4423720, member:

how do I go about checking the circuits ? And if it could be a wiring issue that maybe melted is there a way for me to check without having to individually check wires ?

I would suggest one of 2 paths for you. First path is start looking for YouTube videos about automotive engine control electrical diagnosis, learn some things from that, figure out what equipment you need to do it, and apply that to your problem. This is a longer path but you will learn how to diagnose your own problems- both this one and future ones that may pop up.

Second path is quicker, but you will have to keep doing it with each new problem that happens. Second path is to find someone local that can diagnose it for you.

I give these two options as you have a unique build and because of that, none of us will have any idea of how it was put together, where the problems might be, or any of the other weird things that come up in those types of builds. If you want to avoid spending a lot of money fixing weird stuff and having to find someone willing to help you locally, I would recommend you choose path 1. It will pay you back many times over in the future.

 

[juandiaz2006]

Been trying brother on the first option just a pain in ass but I’m working on it slowly. Currently have the engine harness disconnected looking for any damage

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