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Prev Professional Automotive Repair Technical Discussions for January 7, 2021
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2014 Chevrolet Malibu LS 2.5L MIL Lamp on VIN: 1G11B5SL4E
This vehicle has LT trim at [...]-40 at idle, ST trim seems to go back and forth around zero. Runs great, we are fairly stumped here as upstream O2 switches up and down through its full range, downstream hovers around .77V at idle. Both respond to force... Trouble codes: P0171 (Fuel system lean bank 1)
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