When driving for more then 10-15 miles the car will stall and shutdown. After waiting for an hour it will start right back up again and go that same 10-15 miles and do the same thing. I've seen this happen 5-6 times in a row. The fuel filter was just replaced and the fuel filter relay is running fine (I can still here the buzz after it's died). The vacuum hose on the fuel pressure regulator was loose and has since been replaced as well. This has become quite a nuisance as you can imagine. I can seem to figure out what else is causing the problem other then the things I've already checked. Any input would be appreciated.