need to know fuel psi for
93 astro throttle body
van shuts off while driving and at idle
cleaned all connections
crack line- fuel squirts out
cleaned ignition switch all looks good
pump cycles 3-4 seconds before cranking
no spray at injectors when wont go
try again and it might go
runs great when running

 

The fuel pressure on a throttle body injected engine should be about 14 - 15 psi. (The official spec is 12-15, but they won't really run at the low end of the scale). That van doesn't have a fuel pressure test port made on it, so you'll have to put a gage between the filter and the engine to test it. Also, be sure to check maximum pressure by pinching the return hose (at tank) with the pump running. It should be at least 30 psi. HTH.
Good Luck and God Bless,
Revredneck