Code 177? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 07-13-2009
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Code 177?

Got a Code 177, the book that came with the scanner said HEGO sensor fault/always rich....Chilton says HEGO shows system always lean (left)....I'm alittle confused....

I'm having problems with it running rough, instead of rewriting the story here is a link to it....https://www.ranger-forums.com/forum2...-cel-came.html
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Old 07-14-2009
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177 = System indicates rich bank #2 - Haynes Manual
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Old 07-14-2009
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Found this last night....Ford Mass Air Flow Sensors | Suite101.com .... I have already changed the O2 sensors out. The thing is that it is only intermittent, that's why I'm leaning toward the electronic side of the truck.
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