3.2 MAF reading 2.9g/s Good or bad?

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3.2 MAF reading 2.9g/s Good or bad?

Postby mchl1cox » Wed Jan 11, 2017 7:47 pm

I have a MAF sensor reading of 2.9 g/s @756rpm STFT1 51.6% intake 54.0kPa vacuum reading is 13.985 in/Hg what does this mean?
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Re: 3.2 MAF reading 2.9g/s Good or bad?

Postby Buster28 » Thu Jan 12, 2017 8:13 am

The MAF reading is too low, it should be about 7.6 Grams/Second
The STFT is too high, it should be closer to zero
The MAP reading is too high, it should be about 30Kpa
It appears you have a vacuum leak, allowing air to get into the engine without being measured by the MAF
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Re: 3.2 MAF reading 2.9g/s Good or bad?

Postby mchl1cox » Thu Jan 12, 2017 6:30 pm

Thanks again for your input Buster28, I have replaced most vacuum lines that I can locate, it does seem to be some behind the motor, kinda hard too get too though, would I have too remove the plenum too get too them? This is my only vehicle and trying too do repairs as quickly as I can. Thanks again!
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Re: 3.2 MAF reading 2.9g/s Good or bad?

Postby gwana66 » Fri Jan 13, 2017 3:11 pm

Plenum gaskets are a likely culprit anyway.
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Re: 3.2 MAF reading 2.9g/s Good or bad?

Postby mchl1cox » Thu Jan 26, 2017 2:24 pm

It was the lower intake gaskets causing all the drama, Thanks for all the info!
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