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Anyone Know What Indicator this Is?

DougS550

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I cannot find my owners manual but wanted to know what indicator is this. Do you know where the sensor is located?.
Thanks for your help.
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DougS550

DougS550

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Thans for the help. At idle my AFR stays at 14.5 but when I get on it goes erratic pegs 20, then goes to zero then goes back to 14.5 while easy cruising. No miss fires and no fault codes. I must have pinch my rear o2 sensor wires when I removed the after LTH aft cat pipe. I will check it out tomorrow. I can always OHM if I had a wire diagram of the wire.
 

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Thans for the help. At idle my AFR stays at 14.5 but when I get on it goes erratic pegs 20, then goes to zero then goes back to 14.5 while easy cruising. No miss fires and no fault codes. I must have pinch my rear o2 sensor wires when I removed the after LTH aft cat pipe. I will check it out tomorrow. I can always OHM if I had a wire diagram of the wire.
Rear o2 has zero to do with anything but monitoring cat efficiency. the upstream o2's are the widebands that matter.
 
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DougS550

DougS550

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Rear o2 has zero to do with anything but monitoring cat efficiency. the upstream o2's are the widebands that matter.
So the front two O2 sensors control the AFR gauge? I will jack it and inspect the wiring and do a system diagnostics check and go from their. Appreciate your help.
 

CorvZ061

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So the front two O2 sensors control the AFR gauge? I will jack it and inspect the wiring and do a system diagnostics check and go from their. Appreciate your help.
correct, front o2 sensors are the ones that controls that meter, they’re the ones the pcm uses to keep everything running right
 
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DougS550

DougS550

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correct, front o2 sensors are the ones that controls that meter, they’re the ones the pcm uses to keep everything running right
Thank you for the help. Even though my tuner said my fuel readings were good, I will replace the two front sensors and inspect the wiring.
 
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DougS550

DougS550

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Daryl from Wengerd said that is normal under the conditions I described to him.
i will remove that gauge from my cluster.
Thank you all for your help.
 

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Afr should be between between 11.2 ish to 20.

Idle part throttle cruising 14.08, wot 10.3-11.5 depending on if cat over temp thresholds are met to see the 10s on afr

Decel 20
 
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DougS550

DougS550

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Afr should be between between 11.2 ish to 20.

Idle part throttle cruising 14.08, wot 10.3-11.5 depending on if cat over temp thresholds are met to see the 10s on afr

Decel 20
Thank you for your help, and letting me know.
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