My car has lost power completely while driving down the road. This has happened three times and it has been unable to be diagnosed. I manage to pull the car over and it crank a little but won't turn over. I have tested the battery, alternator, fuel pressure, no codes have come up. I even took it to more than one mechanic. We have tried pulling the Mass Air sensor and plugging it back in to no avail. Any ideas? Everyone is stumped. Also, I have replaced the Crank sensor?