2003 ford focus wagon

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July 6, 2015 at 1:03 am #668786
carlos
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I have a 2003 ford focus wagon has a p0171 code i did a complete tunup and still get dis code 👿
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July 6, 2015 at 1:44 am #668791
Andrew Phillips
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Make sure the MAF sensor is clean, and check the PCV valve.
July 6, 2015 at 8:10 am #668846
none
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The code means the engine is running lean. Follow cap’s advice and change out the fuel filter if you’ve never done it. Ford historically recommends a new fuel filter every 30K. Even if the filter has no effect on the fuel trims, it’s a good and cheap maintenance item.
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