Well you are quite welcome for the suggestions that I tried to offer for you. BUT with your last post of the oil light coming on because the car died(stalled), THAT is NORMAL of ALL motor vehicles. May I make a final suggestion and have your Pacifica taken to a more knowledgeable "shop" that may specialize in chrysler products to get to the ROOT of the problem more efficiently. If per chance you return here with a better description of the history and symptoms of your Pacifica's condition, I would again be willing to try and help out.
For your information this is not a chrysler managed/staffed tech service, but a forum of owners working to help each other out.

 

A little story of the importance of giving good info about your cars symptoms in order to get GOOD help(forum or at a shop).
When I was an ACTIVE auto tech, I had a customer drop off their car before hours, NO call and just left a note that said the THE CAR IS RUNNING STUPID, PLEASE FIX IT! It was 3 days before I could make contact with them (they had gone out of the area), Car would start and idle, drive fine for every time tested during that time frame. When they finally called to see if the car was indeed fixed, and I said that no fault could be found, they were upset and said, well it looses power and can't hit 80 mph after a continuous drive of more than 80 miles duration! NOW that gave me something to work from! It was a plugging in tank fuel filter! ( this was in the mid 80's BEFORE cars had diagnostic capable computers) Moral is You drive the car, so to get help please give good description of conditions and when things seem to go "goofy" during your use of the vehicle.

 

The car won't go into limp mode if the engine has died. "Limp mode" means that the transmission stays in second gear. This will allow you to drive it slowly to a shop for repair. It's a transmission issue, not an engine issue. You said that the car will "go into limp mode and the oil light comes on because the engine has died." Maybe it's just an engine stalling problem, not a transmission problem which is what "going into limp mode" implies. If you told the shop that the car "went into limp mode" when it just stalled, they will be looking for a transmission problem that may not exist at all.