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2002 GMC Yukon Question: code says MAF and engine misfire



chadm@bendbroadband.com, Redmond, OR, December 07, 2010, 10:27

my yukon one day driving down the road started loosing power and wouldnt idle had scanner put on it and says mass air flow and engine misfire what could be wrong

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  • Answer #1

    December 07, 2010, 10:38

    the missfire could be plugs, coil failure or injector.
    the mass air flow could be a bad hose going to the intake or the sensor itself.
    you should get a real diag from a real tech to give you your resons and a bid.


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    chadm@bendbroadband.com, December 07, 2010, 10:42

    i've heard that these injectors are very strong could it really be that my mechanic just wants to replace the injectors is'nt that just a shot in the dark and spendy.

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