2000 astro van died while driving and will not start back. fuel pump is coming on but dont know how much pressure. has new battery also

Its either got a clogged fuel filter or the fuel pressure regulator is bad.

Check the fuel pressure, you may need a new fuel pump.

The fuel pump pressure shoud be 55-61 psi . Check for spark by removing a ignition wire at a spark plug and put a spark plug in wire and hold to engine ground and crank engine , if no spark then remove coil wire at cap and repeat.If still no spark then coil , module,,crank sensor or pickup may be the problem.
Check fuel pump pressure first and if available check for codes for possible crank sensor.

I'm guessing you checked the fuses already, so if you have spark at the plugs, look for a vacuum leak. If you still suspect the fuel pump, do a fuel pressure test.

I would recheck fuel pressure and see if there was a hose or something let go inside the tank . indicated by no pressure, possibly a faulty pump I've seen new ones **** out, also these vans with the 4.3 were bad for having weak coil wires and shorting out against the inside of the engine cover ( doghouse) good luck.

check the fuse for the injectors,the wires may have shoted out at the breather and blown the fuse to open the injectors--separate fuse than the fuel pump

check the fuel pressure regulator and also the emc fuse

more than likely

if your mini van has a 4.3 litre engine v6, when you turn the key on you should be able to hear the electric fuel pump start. the fuel pump is inside the gas tank,if you hear the pump you might want to change the fuel filter. The thing about computerized engines and a throttlebody is that you need a fully charged battery to start work with.

The fuel pump might be going out. Did that mechanic do a fuel pressure test/tests? Sometimes the pump might be acting up when it's going out. Off hand, I don't know what it could be.