MAF Airflow
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Joined: Aug 2003
Posts: 271
From: Miami,FL
MAF Airflow
How much air is the Mass Air Flow sensor supposed to flow at idle? Mine is around 7-8 gr/s, I was wondering if that is to low. Also, it makes a very loud suction sound, is it supposed to do this? 
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Joined: Nov 1998
Posts: 71,115
From: Hell was full so they sent me to NJ
You might want to read this document.
Sounds like yours is "normal".
At idle, the air mass flow will range from as low as 6gps to as high as 10gps. If you reading is suspiciously low, you may have a vacuum leak. If it is suspiciously high, and the idle speed is correct, it's most likely a "faulty" or "miscalibrated" MAF. This problem is typical of "home ported" units.
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tommalcolm
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Sep 11, 2015 03:39 PM