Been working like a mad man for the past two months, and I haven't had time off to go through everything. This morning while pulling into a parking spot the truck died. Started it back up just fine, it sat at 1000 RPM for 15 seconds then started to rough idle. I'm thinking its one of those bigger vacuum lines just before the throttle body. But I also wonder if it's the MAF sensor. The issues seem to amplify when its colder, which is very frustrating since we have just started the winter months.