In a large skillet over medium heat, combine sausage, onion, and green pepper. Cook until sausage is browned and onion is tender; drain off pan drippings.
Meanwhile, in a medium bowl, combine tomatoes, sour cream, water, sugar, chili powder, and salt; mix well. Stir tomato mixture and noodles into skillet.
Cover and simmer 15 to 20 minutes or until noodles are tender, stirring occasionally.
