1989 4.0...Trans shop replaced flex plate about a month ago and this week it had a couple of "crank no start" episodes. The first time it sat for 3-4 hours before I went back to call for a tow. I tried it first and it fired right up. Started a bunch over the next four days then did it again and I had it towed to a shop. After sitting overnight I just went to the shop and it fired right up twice. Seems like its the CPS or maybe NSS but I have two questions:
1. Is there any significance to the fact that it fires after sitting, like something resets; and,
2. Could the flex plate work have done something to either the CPS or NSS (they had to drop the trans)?