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15/01/2023 6:50 pm
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I have a 2007 Mazda 3 2.3L with code P2187 (system running lean) and wondering how I should diagnose it.
When I disconnect the MAF sensor, the car begins to idle surge, so idk if that is an indication of a faulty MAF sensor.
from my knowledge, PCV Valve is still original and hasn’t been changed.
Any advice would be appreciated.
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