He asked about why his truck would stall after he'd been driving it awhile. The answer given was to get a diagnostic. The diagnostic would have to be hooked up when the problem occurs to see what sensor is being tripped. It just does it sometimes. Very frustrating. I think it's one of the sensors tripping. But how do I know which one it is? I fixed some vacuum lines and it didn't do it for a long time. I wish I knew what to fix. His ? Has all the details. My truck does the exact thing. Sometimes, when its hot, it kills the engine. Sometimes it takes a lil while, sometimes a long while to start again.