Hi, I drive a 2008 Frontier SE 4x4 V6, manual transmission. If I hop in the truck, drive 10 minutes, and shut it off, it won't re-start for me. It turns over and the battery seems fine, but it won't fire up. This has happened a few times (including today). After about 30 minutes of sitting, it fires up. Based on the timing, I'm guessing the problem has something to do with temperature--like the truck is fine when cold or hot, but not when it's warm. I've taken it to two different mechanics (including a Nissan dealer) and they couldn't find anything wrong with the truck. Anyone else here ever had this problem and actually determined how to fix it? Thanks.