pats 2000 expedition

i have a 2000 expedition 5.4l,it has started acting strange ,it will start and the for no reason the tack drops,it usually quits,and horizontal line show where the milage is,i have researched it and aeem to think it is possibly droppin  the key recogniton or something to that affect,i talked with several techs who are my buddies and work for ford and they say maybe it is something with the pats system,it does not throw any codes,and will start back up some times it takes a tme or 2,and sometimes it will run fine for 20  or more minutes it does seem to be getting worse so maybde i can find it since it is intermitent it drives you nuts,i checked all power and grounds so any ideas would be appreciated,is there a way to by pass the pats? too bad it not a 454 i have an extra in my shop i may just put it injmw

I ran across something similar in an 01 Mustang. It was a friend's car and I had installed a security system with starter kill so there was still an anti-theft system afterwards. I permanently bypassed the system by pulling the pellet from the back of a key, removing the antenna ring from the column, and permanently mounting the pellet inside the ring under the dash out of the way.Installer, IT support, and FFL. I need less hobbies.