Very odd. Do you have a scangauge or anything to measure system voltage in realtime? My guess is the system voltage is too high or too low.. Likely an alternator on its way out or tensioner giving up
Maybe something to do with your ignition switch? It looks similar to what happens when you turn the key on and the computer/vehicle starts going through it's self-diagnostics (including idiot light testing) during startup.
That was my thought as well.
Do our ignition switches have the plastic replaceable switch piece like other cars?
SilverBullet75
Formerly: '01 Ebony VXSTLTH
Now: '08 Saab 9-7x Aero 6.0L