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2000 GMC Yukon XL 1500 Question: code reader indicated a new mass air flow sensor vehicle did not fix problem

 

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slugger9, Ohatchee, AL, November 04, 2012, 04:27
 Rookie

replaced MAF sensor,new fuel filter vehicle still hard to start plus runs ragged now diagnosed no codes

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  • Answer #1

    November 05, 2012, 12:43
     Master

    Use scanner with 'live data' capability for diagnosis , not a code 'reader'. Check for loose pin connections at sensors and for vacuum leaks.

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