Lesabre stalls sporadically, starts right back up.

What is your question?

Have replaced crank sensor, harmonic balancer, MAF sensor, 02 sensor, fuel regulator, and tested IAC and MAP sensors. Fuel pressures are all good. New fuel filter, air cleaner and spark plugs as well. Removed entire throttle body and completely cleaned it too. Car starts and runs great....just shuts off 2-3 times a day and immediately starts back up. Only code I can get on my scan tool is P0629, which is "invalid pass key frequency"?