it just doesnt make sense

 

well I ran the codes again after the truck was running and I got three codes that came up when the truck was running
all three of the codes have to do with vacuum presure always open soooooo
three has to be a vacuum line leaking

 

Did you ever check those vacuum hoses on the cruise control, assuming your truck has cruise control? Your problems sound so much like the ones I had with a 1988 F-250. Don't just glance at the hoses - pull them around and unbend them to see if there are holes, slices, etc. where they bend. And, there is one that routes through a bunch of other wires attached to the firewall. Mine had rubbed holes, slices there too.

I repaired mine with black RTV silicone until I could get them replaced. The Ford dealer was a bit **** about replacing those hoses with the exact Ford replacement - they are thick and kind of hard to find that thick with the correct inner diameter. The dealer seemed to think the right hose mattered.

 

Was this problem ever fixed? What went wrong?