Ok thanks for the inputs. A bit more info as I took it out intending to run an errand. Measured voltage again - no load 12.4v, Started normally (voltage at battery - it's a wagon- after start was 14.17v using a crappy digital multimeter) drove for about 3 mi and it died while driving, no symptoms aside from engine stopping rpm on tach drop to zero and I believe most dash lights light up. Pulled over shut down and try to restart engine spins for a couple seconds no start, did this about 4 times, got it started (gave some gas while turning over, not sure if that made a difference ). After restart only warning is CEL, drove home and parked it for the moment.

So does any of this help without codes?
Maybe separate topic but is the launch reader worth getting - does it rad most subsystems through the obd2 port as it does not come with a 38 pin adapter. If not should I just get a cheap one for the moment? Will take a bit for the launch one to arrive if I go that route, if I buy a cen tec (horrible freight special or similar) may be able to get it tomorrow.

Wild ass guesses? Figure could be fuel filter related?, CPS as suggested, brake switch, voltage running seems a bit high, have the same car in a 2002 version so can check that, voltage regulators are relatively cheap although not sure that would cause any of these symptoms...

Thanks
Paul