after seven trips to the dealership for the same problem(posted many threads about it) a wise tech at my beloved home town Saturn stated "it might be an injector leaking" which would cause the black smoke and bogging out and with that woola my car has no more problems. He replaced all four injectors. Saturn corporate then called me and asked "for my troubles" could they make a car payment or extend my warrany to 4 yr or 50k miles for free. Now that is customer service!!!!! In the long run the extended warranty is my best bet so I will probably run with that or hell ask for both.