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knock sensor

  1. Various Sensor Problems - Check Engine Light

    General Discussion
    My daughters car (2006 Saturn Ion Level 2 - 108,000 miles) starting running rough for a while but then would run fine. I pulled the codes and got a P0326 so I replaced the knock sensor. Next day same problem, pulled the codes again and got a misfire code. Replaced the coil pack and it runs fine...