Long short of it... after 30 mole drive home, come to my house. Left truck ldling, grabbed a jack n tools. Went to a by a buds house worked on his car. Fired truck up and never got above 50% throttle/50mph. All of the sudden sounded like it was on 6 cylinders. Pulled over and killed truck. Had fp and no sign of issues. Then truck would not start. Turned over and nothing. Mashed the throttle down snd the truck started up , revved to keep running then the idle was erratic. Drove truck back home even up to 75 on the freeway for about 10 miles. No issues. Parked truck and it does the no start unless mashing the throttle agian. Any ideas guys?