Intermittent high idle
#1
Intermittent high idle
2014 Mazda 6. Car will randomly rev up at idle (around 1500-2000 rpm) and then return to normal. Is throwing a lean engine code p0171 and p0507. Unplugging maf sensor returns car to regular idle (around 750) instantly. Tried replacing maf sensor and getting same issue. Unplugged battery before sensor change for about 15 minutes and pushed brake pedal. It’s been driven twice since maf sensor change for about 100 miles. This is a 4 cyliner in-line.
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