Hot Start Problem
 

My wife drives a 2002 9-5 automatic. In the last couple of weeks sometimes when she stops the car sometimes it won't restart. The engine cranks fine but sounds like there is no spark. Just a constant cranking sound. After is sits for a little while it will start right up. It has been raining a lot lately. Every time it's had a problem it's been wet but the past couple of weeks it's been rainy almost every day.
The only other posable symptom is that every now and then it feels like the engine skips. It seems like the problem is ignition or electrical related.

I bet it's more related to the engine being warm when it fails to restart. Is that the case? It'll start fine cold and won't restart after being warmed up?

Yes, I think it's more likely that it's just when the engine is warm and not from the rain..

crank position sensor going bad