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2004 Ford F-150 Heritage Question: p171,p174 codes

 

Question

Visitor, Kansas City, KS, February 11, 2011, 19:59

got truck checked out,replaced pcv hose passenger side, 3 weeks later throws codes again,any suggestions?

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    backyard tech February 11, 2011, 20:41
     Master

    You have a vac leak. You have either missed other vac hose/connections or you have a intake manifold leak. If you would provide more info on your truck I believe there might be a TSB on that truck. Contact me at autoknowhow@gmail.com.

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  • Answer #2

    ZeeTech February 12, 2011, 08:03
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     Master

    Vacuum leak or a failed MAF sensor.

    Zee

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  • Answer #3

    bmdouble February 12, 2011, 10:03
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     Master

    If it is a 4.2 liter engine you will have to replace the intake spacer.VERY COMMON problem.

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