"Added by eddie, posted by 410custom"

[font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif][font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif]Wiring MISTAKES!!
I must eat crow for two things

First I was wrong earlier!

Tim's degree wheel DOES WORK!!!
Second, I had two pins backwards on my chart AND I reversed 4 wires after a coil driver
this caused me to be combining 4 cylinders incorrectly at the coil packs!!
truck was misfire and backfire during cranking!! Not good

It is fixed now
Let me show you how







I had typed 8, 7, 6, 5 instead of 5 6 7 8 and that caused a snowball effect

The file has now been corrected, as has the wiring at the truck

Basically I had to remove the coil pack and coil drivers
I labeled all 8 cylinder signal wires with their number (flags on tape)
Then I could see where I was way off! Basically combining the wrong cylinders for the waste fire coils



The purple ink shows how things were wired incorrectly. The correct wire combinations shown in graphite direct from ford wiring schematics for our coil packs




With all 8 wires labeled for their cylinders based on the pin locations from Holley it was clear to be way off. This caused misfires and backfires

Easy enough to fix on the bench

I compared holleynwiring information to my chart and found some mistakes
Then I went and confirmed the truck is wired from pcm all the way to the coil drivers 100% correct (phew)
The only changes needed were after the odd side Coil driver
Everything else was correct

Tims truck used the same wiring diagram and is having similar misfires and backfires during cranking
We are
Hoping with this information about the cam synchro and the coil wiring his truck will also decide [font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif]to run!!

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  pinwrong pcm.pdf
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  pinwrong drivers.pdf
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Last edited on Sun Oct 9th, 2022 03:01 pm by Eddie Money