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Rear O2 voltages?

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Old Nov 10, 2017 | 01:10 PM
  #1  
KingKoopa's Avatar
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Default Rear O2 voltages?

I can't seem to locate the voltage output range of the rear oxygen sensors in the RAVE, can someone kindly point me in the right direction or divulge the correct info?

I need to know the correct output V of a working downstream O2 when the cats are operating as they should. I'm deleting the cats and need to fool the computer with a resistor but dont know what V I need to achieve. I also believe my cats are clogged so I don't trust the outputs given by my code reader.
 
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Old Nov 10, 2017 | 02:12 PM
  #2  
Lisa Bunch's Avatar
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My book on p.18-2-29:
This value equates to an HO2S output of 450 to 500mV. A richer mixture can be shown as lambda=0.97, this pushes HO2S output voltage towatds 1000mV. A leaner mixture can be shown as lambda=1.10, this pushes the HO2S output voltage towards 100mV.
Looks like 500mV is lambda=1.00. Perfect.
 
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Old Nov 10, 2017 | 05:53 PM
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I'm running rich at the moment and my rear O2's show .8v (left) and .9v (right) almost (not entirely, but mostly) steady. No rear O2 codes thrown.
 

Last edited by No Doubt; Nov 10, 2017 at 05:55 PM.
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Old Nov 10, 2017 | 06:23 PM
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Lisa Bunch's Avatar
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From: Apache Junction, AZ
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If the O2s are working (looks like they are) you won't get a code for them. You might get other codes though. If you are running fat either too much fuel or incomplete combustion. How do the spark plugs look?
 
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