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2002 Cadillac DeVille Question: rough idle

 

Question

derek1060, Ridgewood, NY, January 09, 2010, 09:12
 Rookie

4.6 noth star i change the plugs and wires crank sensors fuel filter code PO300 mutiple mis fire what else could this be

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  • Medium-star Best Answer
    Bret Bodas from RepairPal Test Shop, January 09, 2010, 09:17
     Master

    Here is a ton of great information about the P0300 code: http://repairpal.com/OBD-Code-P0300

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  • Answer #2

    Visitor, June 16, 2010, 20:56

    Try the Vacuum Hose's or Brake Booster.

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