PCM and MAF - Ranger-Forums - The Ultimate Ford Ranger Resource


2.3L & 2.5L I4 Tech General discussion of 2.3L and 2.5L I4 Ford Ranger engines.

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Old 06-18-2008
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Location: Paris, IL
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Icon4 PCM and MAF

Does the MAF mitigate the PCM's fuel mixture decision on a 05 ranger? This i chapter 5 of my quest to get rid of my check engine code p0171 an my spark knocking.
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Old 06-18-2008
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P0171 System Too Lean (Bank 1)

the MAF sends the readings it get to the pcm and the pcm tells the injectors how much full to use...
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