deathcards
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I have a drunk O2 sensor on the yukon. i was hopeing to wait but looking like o2 sensors tomorrow
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What tests have you done to confirm it's the oxygen sensor at fault and not some sort of vacuum leak or bad injector?
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live data, double checked that the intake was torqued down correctly, injectors are brand new, coil packs and spark plugs and wires are new, new maf, i confirmed the tps is working correctly, pcv valve is new, map sensor is new and check to make sure i t wasn't leaking
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also the engine stumbles when it gets stuck way rich for 3 sec o2 pre cat