Long story short the truck sat for 6 years and squirrels ate up the rear wiring harness. It has a 5.4 Triton V8. I didn't have fuel pressure but I replaced the pump and now I do. I have two wires that were chewed through that are supposed to be for a knock sensor(YE/RD and YE/BLK coming off the PCM) that have been chewed through. Engine seems like it's trying to start up but simply refuses to. Does anybody have an image of where the wires should be coming from? Where they should be going? I'm of the opinion that the lack of a knock sensor has so far retarded the timing that the engine refuses to fire the way it should. (I AM CONFIRMED GETTING AIR AND FUEL, I CLEANED EVERY INJECTOR YESTERDAY AND THEY ARE FIRING THE WAY THEY SHOULD).

 

Any codes?

 

Turns out I am now in PATs hell. Wish me luck. Have to tow it to a dealer.

 

PATS will disable the injectors, not spark.

Are you sure of your observations and "diagnosis"? Your latest is inconsistent with your initial statements.

 

This thread is actually a repost. Here is the original thread which has several replies:

https://www.f150online.com/forums/19...al-issues.html

I reported this to the mods for a thread merge but no response. To the original poster: Please don't start new threads on the same issue, it loses continuity and gets confusing. Thank you.