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  1. P0100 CEL is it causing my p0171?

    Problems & Troubleshooting
    I bought this car with a CEL in the beginning of November. When I picked it up the dealer said they fixed the light. So with it "fixed" I installed a boost gauge. after a few days I got P0171 system too lean bank 1. The dealer wont touch it because "boost gauge caused this new light"...
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