Check the ground on your battery, make sure it's super tight. I've had the similar situation happen on one of my cars, it had enough ground to turn the motor over, but not enough to give the electronic ignition enough ground. Did the same thing, running great and just died. I had to tow it home. Before I started to really get into it, I tightened up the cable on my battery, I had noticed it was just snug. It immediately started and never gave me anymore trouble.

Dave