2004 chysler pacifica

my 2004 pacifica sometimes after warm up and sitting about a hour wont start sometimes can get it started with a little gas pedal (wants to low idle stall) sometimes wont start at all. dealer cant figure it out has no computer codes

It could have codes if the computer hadn’t gone nuts. It’s only one possibility, but todays computers should say whether they have been reset recently. There is something missing from this picture.