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  1. Gen1 Powertrain
    Repectfully request advice: Low O2S2 voltage & high LTFT caused by bad Catalytic Con vehicle: 2011 Cruze LT 1.4L turbo, 67K miles (This car was not properly maintained by the previous owner.) Long Term fuel trim ~ 12.7 O2S2 (down stream O2 sensor) voltage .67 vacuum at idle after warm up ~...
    advice bad catalytic catalytic converter caused con high long term fuel trim low ltft o2s2 repectfully request voltage
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