lean

  1. Deathacus

    Is this O2 sensor any good?

    Hey there! I just pulled my O2 sensor trying to diagnose a 172 code. I figured it would be a little bit dirty after all this time but I'm not sure if it's too fouled or what. And a curious thing, every source tells me Bosch was the OE supplier, but the sensor I got is stamped NGK and Ford, with...
  2. B

    P0171 and P0174

    So I recently bought a 2013 Sho and it has codes for both banks running lean. Checking fuel trims and short term fuel trims are very high 40% until long terms take over then longs are at 30% and shorts stay at 10%. Checked for any air leaks and can’t find any. Used brake clean while monitoring...
  3. shoftw

    Sai delete question

    When deleting the sai system does anything need to be capped off? Im chasing a lean condition on my car and im trying to rule that out since mine is deleted.
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