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Old 07-16-2008, 04:32 PM
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HeMi101 HeMi101 is offline
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Re: 2003 - Impala, loosing pick up ability

P0300 Is: Random/Multiple Cylinder misfire detected.
P0404 Is: Exhuast Gas Recirculation Circuit Range or Performance Problem.

Seems like Something is wrong with your EGR system.
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