Chevy van won't start

I have a 1996 Chevy conversation van and it will start but dies shortly after any ideas

Check fuel pressure, look for about 60 psi, in the future post what engine for more accurate info.

Does it seem to fun fine otherwise, just starts up, idles fine, then stalls? Or does it stumble and cough before stalling? If you open the throttle a bit after the engine starts can you keep it running? Have you checked the OBD-II system for diagnostic codes?

-Rod