The sudden stop of the engine of my car Mitsubishi Galant 1997.

Hello, There are a number of reasons that the engine will stall. The best possible advice I can give will be based on the circumstances and conditions when the vehicle stalled. -Did you get any warning lights before the engine stalled? -Were there any signs beforehand, such as chugging, missing, jerking? -Were you accelerating, braking, coasting on the highway? -Have you scanned for trouble codes? If there is anything else pertinent that you can think of, let me know so I can try to help you out.