johnsoperv52

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August 12, 2019 at 7:52 am in reply to: Concerning your video: “Diagnosing Lean Condition from Exhaust Leak using Scan T #72896
johnsoperv52
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Aside from no way to edit my original share I am relegated to use your reply option to add and further clarify…

I believe I can explain how you did uncover a Definitive “exhaust leak diagnostic tag” your goal of discovery I believe can be shown a success???

Focus is on LTFT Not Moving … WHY … here because intake fuel/air ratio is diverging away from an original STOIC condition.

PCM ratchets fuel in only to see a Ratchet count going out of bounds. PCM defaults with no valid count to display as the new LTFT ASSIGNMENT. All due to extra air responsible for this not at all present in intake side.
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