I have a P0300 code (Random Misfire), it's bad. The Vacuum seems O.K. 17 inches +/- 1/2 inch. The Spark Plugs look fine and the Fuel Filter has been changed. The fuel pump stays steady @ 55 p.S.I with the Ignition off, but fluctuats when the car is running. Is this fluctuation normal when you have a misfire? I have a 2003 Saturn ION.
have the same problem?
Monday, November 8th, 2010 AT 6:17 AM