Also there is no check engine light and i did swap out the pcm with one out my donor truck and the pick up sensor

 

Get that Napa sensor out of there and get an OEM one.
I had to replace mine when i did my tranny because it got pinched between bellhouseing and block when putting it back together.
After a week or so my truck just started shutting down between 5 and 8 minutes after you first started it.
Wait about a minute it would restart and no more issues, unless you let it cool completely down.
Never received any codes.
It took six monthes of testing, till I just went ahead and replaced the Napa sensor with OEM and problem was gone.
That was over year ago and no issues since.

Dave

 

Found out by going though the snap on scanner i have a misfire on cyc 3 but it dose not trip my light. My buddy friend "dodge tech" said the reason why the fuel sync keeps jumping around is b/c of the misfire and it trying to fix it. So i doing a tune up this weekend and see if it stops. If not i guess i do a leak down test for crank cyc head.

 

I am having a very similar problem. I'm wondering how yours turned out. You can probably find the thread I started hear under my screen name.