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Re: Interpret fuel trims
Posted to Technical Discussion Forum on 10/11/2007 4 Replies

Is your post-replacement trim number at cruise LTFT? Is the STFT a large number in the opposite direction? If yes, then you likely didn't reset trims. The PCM doesn't "know" you fixed it and it's just running the LTFT numbers that it has in memory. If you don'... Login to read more.

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