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MAF and O2 Rich condition

  • naros812000
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8 years 3 months ago - 8 years 3 months ago #13720 by naros812000
MAF and O2 Rich condition was created by naros812000
Dears,
Here I have shown data of toyota Avalon 2012 v6 3.5L engine. I have got data under WOT. I think the car doesn't have the factory performance.
Any explanation
No DTC

RPM 5530
Vehicle speed 119 km/h
MAF g/s 166
TPS %81
AFS B1S1 0.228
AFS B2S1 0.944
Target A/F ratio 0.759
Atmospheric Pressure 93kpa

Any spot? any recommendation?

Thank you all
Last edit: 8 years 3 months ago by naros812000.

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  • Tyler
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8 years 3 months ago #13735 by Tyler
Replied by Tyler on topic MAF and O2 Rich condition
To be clear, are the 'AFS B1S1' and AFS B2S1' equivalence ratio PIDs? Or are they A/F sensor current? If they're equivalence ratio, then it looks like bank two is not running rich enough. .944 is just off 14.7/1, which is probably not rich enough for WOT acceleration.

The .228 value on bank one is somewhat strange, though. :unsure: That's REALLY rich, almost too rich. No offense meant, but are you sure that number is correct?

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