I have this problem right now, almost 100 percent of the time it starts (daily driver). And some times as in like almost every other day, I will be driving on the highway and the car will just die, all lights dash lights come on and engine turns off. I have to pull over and wait about 30 minutes then magically it starts. Blows my mind. Is it the ignition switch? Also I have another issue I'm thinking maybe a vacuum leak some where but I'm unsure. I replaced the throttle body and the gasket, and replaced the mass airflow sensor. And some times when I'm driving, this was before the ignition problem.... the car would just loose all throttle, engine would still be on but running very rough idling up and down between 1 and 1.5 rpm. I shut the car off after I pull over and turn it right back on and it works fine. But I keep getting a mass air flow code on the scanner. Vacuum leak? Help!