1997 Ford Aerostar Van stalls while in park and at stop sig

Hi:
First, it the check engine light on? If not, I need you to check for a couple things. First, check for vacuum leaks. Look and listen for hissing sounds, damaged or disconnected hoses, dryrotted hoses...

If no luck, check the fuel pressure. Many parts stores will lend or rent the gauge to check it. If you don't know how to do it, review the following video.

https://www.2carpros.com/dia/test_fuel_pressure.htm

Let me know what you find.

Joe