Lexus IS Forum - View Single Post - Two codes, PO171 and PO174
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post #7 of (permalink) Old 09-12-2005, 09:08 PM
carpartsguy01
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cleaning and reinstalling only works part of the time, if in park or in neutral you put it to the gas to the floor, and it trys to bog down before it revs. it is most likely your maf.
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