lumina engine stops suddenly

hi
i have lumina LS 99 and i am facing problem that engin suddenly stops while i'm driving in road and when i park a side it come on again.
i visited repairing shops ,they give me different answer like
fuel pump,other said crank sensor and other said key.
this make confused,so please i want your openion about this problem
thank you

i read alot about this too because my lumina APV though stalls while runnin or in park. I got it tested, and it says that I might have a faulty PCM, I read alot of other threads, and everyone seems to have a different problem, either ECU, or something not connected right etc...

since the car stalls you dont know ,,but probably it stored a code as to the malfunction,,because after it starts again the light goes of,,but just before or after it starts to go into stall the check engine soon light should have come on,,,go to Auto Zone and tell then to check for trouble codes they do it for free,,then post a reply and we can get you straightened out

Finally i found the reason , it is from control relay if any body wants more details please contact me at saeedsleiman@yahoo.com