Help! My 2002 Saturn SL won't start. The starter seems to work and it sounds like it is trying to start the car but for some reason it won't turn over or it won't spark. (I exchanged the two year old battery with a new one and that's not the problem.) I didn't notice any problems with it the last time I drove it but did fill up the tank. Is it possible that the fuel line could have frozen even though it's only about 25 degrees here and the temperatures have increased and decreased since then? What could cause a car to suddenly stop starting without any previous warning that it had a problem?