Cars runs fine, on long trips say 2 hours it will just quit running.

Well they can't always tell "exactly"-that's the rub,there is always a bit of interpretation and codes that simply say "misfire"etc,that can be misleading..A bad fuel pump may present with a "bad crank sensor code",for example.The sensor was replaced-the problem remained.A fuel pump is about a 700 dollar job.My car has been checked-different ideas from two experienced guys,and I hesitate to keep throwing money at this car.