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code p0303

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Old Apr 30, 2013 | 07:45 PM
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Default code p0303
where do i start?
 
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Old Apr 30, 2013 | 08:13 PM
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Spark plugs.
 
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Old May 2, 2013 | 08:14 PM
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already done. so wires next?
 
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Old May 2, 2013 | 08:23 PM
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also, get code for multiple misfire 0300. does that tie anything together in terms of diagnosing the problem?
 
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Old May 2, 2013 | 10:29 PM
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Nope, the generic codes are meaningless. They ECM cannot tell which cylinder is misfiring.

Coils and compression should be checked. These codes can be a nightmare on those
 
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