sorry, i'm lost in the post here. so when you drove it and it was stalling, was the front o2 connected?
it will not code for the o2s right away after a pcm reset.
have you driven it with the front o2 disconnected?
what kind of o2 sensor did you install?
i'm not sure what's going on with the map voltage and the code you had. the PCM is looking suspect but we need to be sure the o2 sensors/wires are not causing a problem.
you've got to be sure none of the wiring is mangled/damaged/touching things.
I have not drove it yet since doing these test
I installed an NGK sensor.
I also installed new + clamp, cleaned - wires and clamp, ground to fuse box, and ground on motor tonight.
All wires are secure and not touching including rear unhooked 02 sensor.
I Installed a new fuel filter tonight after doing your test. Started up and never missed a beat. Did not drive though ( Frikin snowing out) Ok, so it ran for 1/2 or so GREAT so after messing with some stuff, heater control ect ( was not working but fixed it) and happen to press the AC button and it died instantly and now I have a no start condition. Did another code check after resetting a and got ;
12 Direct battery input to PCM was disconnected within the last 50 Key-on cycles.
43 Peak primary circuit current not achieved with maximum dwell time.
(only 1-43 flash) there is another saying 43 below but not sure if you need 2 flashes for 2 number 43's.
43 Misfire detected in one or more cylinders 1 thru 6. (4 and 6 cyls.)
I suppose it may have backfired when it quit , a little.
Is there a fuse to reset or replace? If so which one? I have to believe this Jeep is trying this crap on purpose! Seems it is never the same thing.... WHat now do you suggest??? I try and start in the am and or after work tomorrow.