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Eugene Sampley
Eugene ... 5/17/2010
1993 GMC G2500 Rally 6Cyl4.3L - Engine
O2 sensor lean condition what is the problem?
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  • HouseCallAuto
    HouseCallAuto 5/17/2010
    How about a bad O2 sensor? I'll assume that you replaced that.Have you checked fuel pressure and at least replaced the fuel filter?
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