This has been happening for about a week now and at the most random times. For instance tonight I was rolling up to this stop sign, down shift to 2nd at about 25-20 and just roll slowly to it. Look both ways, try to take off and I look down and the car stalled, it starts right back up and won't do it for another day or so. The car has a brand new alternator and battery, I assume this is a grounding/electrical issue or maybe even a sensor? It's really annoying because there's no warning to it happening, it just up and stalls, I'm not sure if it happens before I stop or when I stop because I always have my music cranking loud enough to hardly hear my mufflerless exhaust.