I'm a old school SBC guy, this new stuff confuses me. I have a 98 TJ 2.5 liter 5 speed. Been running fine until I left for lunch today. Started up and died instantly. Turned over a few times and nothing. I gave it a little gas and it fired right up, idled down real low, then came right back up to about 700 rpms. Runs smooth after that. Every single time you shut it off, you either have to give it gas to start it, or turn it over about 10 times. Fuel pump kicks on instantly, fuel rail when turned off for an hour still squirts gas out about 4 inches, when running all the way to the fender almost. Though it might be the check valve bleeding back, but if you kill it and start it back less than 3 seconds later, same issue. Any idea's? Maybe the throttle position sensor?