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How to Test MAF Sensor

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Old 09-21-2010, 04:28 PM
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How to Test MAF Sensor

Hello all,

After replacing spark plugs my car is running incredibly rough. After lots of troubleshooting and testing different things I think I have narrowed it down and its actually not a spark plug problem and it is actually the MAF sensor.

OBD II Sensor displays the following codes:

P0102 (MAF Sensor)
P0113 (IAT High Temperature Circuit)

I have already reset the ECU

Is there a way to test the MAF sensor to see if it needs to be cleaned vs replaced? It's running very rough and you can smell unburnt fuel so I think it is more than just a cleaning. I am concerned that the harness actually might have been damaged while I was doing the spark plug change. I'm not too good with a multimeter although I do have one. Can someone describe to me in detail a step by step process on how to check the continuity of the wires? Also how to check MAF sensor to see if it is working or if maybe I am misdiagnosing?
Old 09-21-2010, 05:26 PM
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Get CRC MAS cleaner from automotive store and clean it. Also try to reset your throttle body position sensor. This is a separate procedure than the ECU reset.
Old 09-21-2010, 06:11 PM
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Yea I did both, I'm concerned tho about the harnessi think too much strain got on one of the wires while moving it around.

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air, airflow, bad, censor, check, cleaning, continuity, flow, g35, maf, mass, omtale, plug, sensor, test
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