I have a 2003 Eclipse GTS Spyder 3.0L

Intermittently when you attempt to start the car it will begin to turn over, and then all the power will shut off (similar to a circuit breaker tripping) the radio presets and clock all reset. A couple seconds later the power returns but it is weak (dim lights) for about 60 seconds, then the power comes back 100% and the car will start.

Possibly related, the car will lose RPM occasionally when stopping, this began at the same time as the above issue.

I have scoured the FSM wiring diagrams and wonder if it has something to do with the anti-theft system. I can't find a system description to learn what exactly it does.

Thanks in advance,

Jonathan