How many vacuum hoses does my car have?

What is your question?

My 2002 Buick Lesabre starts but then shuts off. I can be on the road or in my drive way. Sometimes it seems like it works just fine but then it shuts off. I can start it up with one turn. It accelerates on its own. I have already changed the fuel pump, coils,spark plugs, vacuum hose, map sensor, Intake manifold,fuel pressure regulator vacuum. So could it be that another vacuum hoses is leaking and how do I go about finding it. Ty