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1999 GMC Yukon Question: my yukon is getting a code that sys random multiple misfire

 

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Visitor, Rockford, IL, April 11, 2011, 14:43

My yukon is getting a code that says random multiple misfire how do you fix this? I had the spark plugs changed,replaced the distributor and then replaced the fuel pump and now it is getting the random code but it was not showing the code prior to the tune up it was however driving rough and stalling

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  • Answer #1

    overbys from Overbys Inc, April 11, 2011, 14:45
     Master

    diagnose, diagnose, diagnose instead of throwing parts at a
    problem. how about a plug wire or coil?

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  • Medium-star Best Answer
    Visitor, April 26, 2011, 10:25

    BAD PLUG WIRES

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  • Answer #3

    islandgirl71 February 28, 2012, 20:45
     Rookie

    You should replace the plug wires and spark plugs. It makes a huge difference...

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  • Answer #4

    furiousjiefu September 07, 2012, 14:02
     Rookie

    I am having the same problem with my 96 gmc Yukon. Auto Shop says misfire error code. It seems to want to die sometimes when I slowly release the brake at stop signs. It rhythmically lugs forward slowly ,when you give it gas it goes, but seems to run rough. Sometimes I drive it and no problems at stop signs.... I cleaned out the throttle body... Any suggestions? Thanx in advance

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