Regarding the van. Strong possibility that your alternator is not charging the battery. This means that the van will start and run until the battery runs down, then stops. If it is a new battery, charge can rebuild enough to run again. First thing is to make sure the connectors to the battery Positive and Negative posts are super clean, not corroded, and snugly connected. Google for a quick test for bad alternators.
It cranks like crazy and my mechanic said it can’t be a charging problem because sometimes it dies while I’m driving along. Thanks.