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What is your question?
HESITATED WHEN I PULLED OFF. NOW ROUGH START AND ROUGH DRIVE. CODES 171&174 COME UP, BUT WONDERING COULD THEY BE OLD. WHAT DOES IT SOUND LIKE?

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check for vacuum leaks,engine area,also try cleaning the MAF (mass air flow sensor)use only mass air flow sensor cleaner.CRC/Mass air flow sensor cleaner, Part Number: 05110. Price: $8.69.see youtube video on how to clean the sensor.DO NOT TOUCH THE SMALL WIRES!