subawang Posted December 16, 2008 Share Posted December 16, 2008 Did a little searching and did not find a straight-forward answer. How exactly do I interpret fuel trim long/short %'s that I datalogged from my AP-V2? I am trying to diagnose a misfire on all four cylinders (P0301-P0304) along with running lean (P0171). Thanks. FYI, I see that my short trim is around 25% and the long is around 5%. Link to comment Share on other sites More sharing options...
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