OK there is a lot of stuff here so perhaps we can cut back a bit. Let's check the sensor and port. Pull the sensor out. Put a tube or rag there cause this is going to make a mess. Crank up the engine and rev it up.
https://www.jeepforum.com/forum/f19/...fixed-1304679/
https://www.jeepforum.com/forum/f19/...fixed-1304679/

