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Mercury Grand Marquis Oxygen Sensor May Fail

 
Mercury Grand Marquis Problem
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Model Years Affected: 2000, 2005

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One or more oxygen sensors may fail resulting in illumination of the Check Engine Light.

  • Visitor, , 89,321 mi

    The check engine light came on and the car runs rough on starting an accelerating and horrible gas milage. When checked came up oxygen sensors needed to be replaced.

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