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Nissan altima a/f alpha is 83% at rpm 4000

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4 years 7 months ago #32870 by A93320336@gmail.com
Good day

I have nissan 2009 215km 4cylender at rpm 4000 the a/f alpha come to 83%
It have dravbilty isse
Maf at 3000rpm come to 2v

Is 83% is lean or rich

What cuse rich at high idel

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4 years 7 months ago #32877 by Tyler
An Alpha reading of 83 is the equivalent of -17% short term fuel trim. Alpha is based on 100 being equivalent to zero trim, so numbers above 100 are adding fuel, and below that are subtracting.

What trouble codes are you seeing, if any? What's the specific driveability complaint?
The following user(s) said Thank You: Chad

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