TwinTurbo.NET: Nissan 300ZX forum - Both of your scenarios you've described involve
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Subject Both of your scenarios you've described involve
     
Posted by doug8867 on May 18, 2011 at 9:08 PM
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In Reply To narrowing down solution to common z problem. input plz posted by assAssasin on May 18, 2011 at 08:27 PM
     
Message replacing the sensor as part of the solution, so it doesn't really matter whether the sensor is bad or clogged with crud because "cleaning" the sensor isn't really an effective option if it is clogged. It needs to be repaced.

However, running rich, stumbling could also be a symptom of an vacuum leak and the o2 sensor is just reporting the rich condition of the exhaust gas.

If you want to lean out your car you could disconnect an injector or two.

     
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