I didn't fully read your post. If it wasn't raining when the van stopped working, then you may have something else going on. I didn't notice that thing about the starter.

There is a fuse panel just above and to the left of the battery. Pull the cover off and use a test light to see if there is good voltage to the terminals from the battery/alternator, etc. I don't remember exactly what's up there. If the battery was still connected when you replaced the starter, one of the fuseable links may be open. If this is the case, I can look up locations for you on Monday and let you know where to find them.

ECM-B is the fuse that supplies power to the fuel pump. If that one is blown, replace it and try to start it. If it still doesn't start, check the same fuse. If it's blown it's pretty much one of two things.
1, either you cause a short in the ECM-B circuit when you replaced the starter (not likely) or,
2, the rough ride on the back of the tow truck finished off an already marginal fuel pump module (not unlikely).

If the fuel pump is bad, I suggest using an aftermarket replacement. They are usually much cheaper and last as long if not longer than the OE part. Don't forget to replace the fuel filter at the same time. Plugged fuel filters kill fuel pumps.