I bought mine brand new 2003.5 P5 last October. I've been very happy about this car. It is FUN to drive, considering I had a GEO Metro before. 
But, I had this wired problem. It happened to me twice. When I stopped at the red light, the engine just shut it self off without any warning sign. I had to move shift to "P" and restart the car. After the first time, I thought maybe it's just abnormal and didn't really pay attention to it. But last night after I got off work, it happend again at the traffice light just couple miles from my work. Now I start to worry. Why did it happen, will it happen again and what could be wrong?
I have a automatic trans P5
It has 5000 miles on it and I did my first oil change at 3000 miles.
I always use Shell 87 gas
I always warm up my car for 2 or 3 minutes before driving cause it's cold in Chicago.
The first time it happened after I left home about two or three miles in the morning. It's a cold morning. But yesterday it's not cold, maybe around 45 degrees.
Is it engine problem or ECU problem? Now I'm scared everytime I stop at the traffic light because I am worried the engin will shut off. Fun-drive became worried-drive.
Please, any help or suggestion would be appreciated.
I guess if I go to dealership, they would say "sorry, we couldn't find anything wrong with your car because we couldn't duplicate the problem".

But, I had this wired problem. It happened to me twice. When I stopped at the red light, the engine just shut it self off without any warning sign. I had to move shift to "P" and restart the car. After the first time, I thought maybe it's just abnormal and didn't really pay attention to it. But last night after I got off work, it happend again at the traffice light just couple miles from my work. Now I start to worry. Why did it happen, will it happen again and what could be wrong?
I have a automatic trans P5
It has 5000 miles on it and I did my first oil change at 3000 miles.
I always use Shell 87 gas
I always warm up my car for 2 or 3 minutes before driving cause it's cold in Chicago.
The first time it happened after I left home about two or three miles in the morning. It's a cold morning. But yesterday it's not cold, maybe around 45 degrees.
Is it engine problem or ECU problem? Now I'm scared everytime I stop at the traffic light because I am worried the engin will shut off. Fun-drive became worried-drive.
Please, any help or suggestion would be appreciated.
I guess if I go to dealership, they would say "sorry, we couldn't find anything wrong with your car because we couldn't duplicate the problem".