Crazy Misfires on 1,3,5,7

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Goliath23

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Dec 23, 2024
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About a week ago my 2004 Yukon Denali started misfiring on 1,3,5 and 7 and then I unplugged my 02s on passenger side and drove perfectly fine. Replaced all 02s and drove fine for a night then back to crazy misfiring and now unplugged all 4 and it drives like nothing is wrong.......sooooooo lost!
 

B-train

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1. Any OBD2 vehicle will default to baseline calibrations when a particular sensor is "unavailable" (O2, MAF, etc) and set a light
2. Did you use OEM sensors?
3. Are the correct sensors in the correct locations?
4. Can you watch live data for fuel trims with a scanner when running?
 

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