what I mean is that the van start and after a time that the motor is running this only die.... after that the astro won't start until the motor is again cold or a little lukewarm

i already change the fuel pump, ignition module, ignition coil, pickup coil...

thanks

I had the same problem with a 94 Astro. After replacing everything you listed there, I also replaced the distributor. The problem final disappeared after I had to replace the piece of fuel line between the engine and the fuel filter that is outside of the tank (the line got damaged when replacing that filter).

I am still not entirely sure what caused the problem, but I never had that problem after replacing that line.