My girl has an 03 Rally Lancer, its had its usual maintainence and her ex took out the o2 sensor a few years ago. Well since I have known her, her car stalls out randomly for no reason at all while sitting at a red light and during cold weather i can accelerate to driving speed no problem, but when you try to punch it to pass a car or whatever its like there is no power at all in the engine and it makes a no wierd sounds but you dont really hear the engine rev up at all. You have to accelerate nice and slow. Well thank you for any help.