My problem is my minivan wasn't starting when it rained or was damp.

What is your question?

That having been corrected, a couple of weeks ago it won't start in any weather. I never know whether it'll start or not. The fuel pump maintains a 60 psi. I turn the key and it turns over but won't fire. I do this a few times and it'll start sometimes. Other times I have to wait about 10-15 mins. before it'll start. Other times she'll fire right up with no problem. This happens on a cold start or after being driven. Any suggestions?