Stumble problem fixed
https://www.ford-trucks.com/forums/s...d.php?t=356726
(don't know if that'll work)
ANyway, the problem ended up being corrosion in the 60 pin connector that connects up to the engine processor. Cleaned the processor pins and the harness connector with contact cleaner, and all runs well. Three pins were corroded; one was signal return, another was the HEGO signal, and the 3rd I don't know. Truck hasn't run this good in YEARS.
Just something to look at if you're out of ideas like I was.
Hope this helps.



