OK guys, today my SES light went on, and on the way home from work my car died about 5 times, and bogged down many other times. I went to autozone and it said Crankshaft Positioning Sensor. Then on the way home, my SES light went off, and was fine. What should i do about this? PLus my fuel pump has been really loud (annoyingly) for about 5 months, could this be part of the C.P.S. or no?