My truck has had this problem for years but only intermittently where it
just suddenly loses power.  Sometimes it will start right back up, other
times not.
The 1st incident was diagnosed as a bad fuel pump by the Dodge dealer and I
replaced that.  All seemed well for several months and then...
The 2nd incident shortly after that came up with a code indicating a faulty
primary coil.  The coil was replaced and all seemed well for 2 years and
then the problem started to reoccur.  I replaced the coil less than 2 months
ago and again, all seemed well.  I was running errands last night when after
the 3rd stop it just refused to start and/or stay running. I had driven the
truck less than 5 miles and over the course of maybe 10 minutes. I
immediately jumped out and checked the coil, no loose wires and the case
itself was cold .
   I let it sit over night and tried to start it, same problem..It would
fire but not stay running so I swapped out the coil with the one I had
pulled off it last time and the truck started right up and drove flawlessly.

   I have an ODB scanner and its not showing any codes.   Any clues whats
going on??