RBX

I know what the codes point to, intake temp and vafm fault, but I'm really stumped as most of the posts I find either folks have run new wires or threads abandoned.
If I have to run new wires then I will but damn that would stink. Tracing wires isn't that fun either but, I rather have another few things to test first.
I've done the full afm test and everything is in spec. Maybe I'll start cutting the jacket to the afm harness back and look for issues the truck has some brittle plastic and rubber I guess from being a Florida truck for most of it's life, does that sound right?
Thanks