Engine running smooth then dies
3 Answers
Fuel pressure? Spark going away? Injector driver failure? Need more information.
On an engine that's over twenty years old, it could be anything that's worn out, so maybe a really good tune-up is in store. It could be the fuel pump, or anything in the spark system, but it might just be a worn out alternator. After the engine starts, it's the alternator that powers the car, so it might be that the alternator isn't providing enough electricity to run the engine after a while.
Answer will post shortly? Define shortly; it's now 24 hours.