Depends how systematic the installer is. I will say you are being very systematic. The whole point is to swap harnesses per respective sensors, clear codes, start the truck and wait for codes then evaluate a migrating problem. However, if you inadvertently fried part of your engine harness or a sensor clip, then the problem will follow the harness clip and not the sensor. Of course if you have a bad clip and two bad sensors you’re doubly F’ed and just chasing your tail. Worst case scenario, you can pick up a new engine harness or for that matter a known good used one (dude is parting out a black e53 in the classifieds right now). 12517540449.

I had gremlins in my 1997 Integra Type-R after doing an engine swap and ended up throwing a new engine harness at it and this solved everything. The original harness was just too knicked in a few places to be worth anything.