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Why does your idle fluctuate from 750-1000 rpm on your 1997 5.7 pickup?
Wiki User
∙ 17y ago
could be a number of things, but i would try cleaning the throttle body and MAF sensor. mine started to do the same thing and a good cleaning solved the problem. make sure to use the correct cleaner as carb cleaner can damage the plastic and the MAF.
Wiki User
∙ 17y ago
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