1998 chevy c-1500 4.3 ltr hesitation while driving and runon after ignition is shutoff.

1998 CHEVROLET CHEYENNE
53,500 MILES
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RJVINCE777
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The service engine soon light comes on and goes off intermitently only twice so far,the code produced at pepboys was p0104 which was the MAF sensor,so I have cleaned the MAF sensor which wasn,t very dirty to begin with.however,I still have the same issue. can someone elaborate what the issue would be?
Dec 1, 2011 at 6:11 AM
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RIVERMIKERAT
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Check the timing.
Dec 1, 2011 at 6:18 AM
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RASMATAZ
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Also check if the throttle plate is fully closing-this will cause it to diesel/run-on
Dec 1, 2011 at 6:42 AM