Join Date: Sep 2005
Location: San Tan Valley Arizona
Since all the doors are vacuum operated, and you say none of them function (the are called "MODE" doors, BTW. The "BLEND" door controls air temperature), I would guess you have no vacuum going to your mode control knob. Check that first.
I don't own an XJ any longer, but I still think they are the best of all the Jeep products ever made. My XJ was my favorite vehicle in my 50+ years of driving.
So...I stick around and give advice.