Van cold starts and runs fine, of however you run in a store for 10 minutes and come back to start it, jt will crank and stall. Once engine cools down a little it will start and operate as normal.

things it isnt
1. battery
2. battery connections
3. MAP
4. IAT sensor
5. dirty throttle bottle
6. electrical resistance through coils or injectors om bank 2

Im about to loose my mind over this van

 

Sounds VERY much like cam or crank sensor, probably the cam. Warms up, cuts out. It's only needed when starting and is giving wrong information when warm.
You could test it with coldspray or put in ice when warm. Cam sensor is easy to remove, at least in older models.

Crank sensor gives the engine timing so you should have other problems with it..