SS stalled while at lights - any ideal?
The first time I was at the lights, in drive waiting, after 20 secs or so the car just stopped - no roughness or noise - restarted and couldn't duplicate - ran perfect. The next time - a week or so later - I was driving and braking to stop at the lights - upon stopping the car it just stalled - no roughness or anything.
I dont think it's weather - as the first time is was hot with a/c on - the second time it was colder with heater on low. My electrical is good and car never runs rough.
Any ideals? Could it be spark plugs and wires?

