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First you unplug the sensor. You need a torx wrench to take out the 2 screws. I actually cleaned mine with a can of mass air flow sensor cleaner (use the whole can - about $8.00) and allow to dry overnight. Don't touch the sensor with your fingers. Plug in and it has worked for over a month.

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15y ago
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Q: How do you replace mass air flow sensor on infiniti qx4?
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