C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Rear O2 mv output level.

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Old Jun 10, 2005 | 01:10 PM
  #1  
VAHROOM's Avatar
VAHROOM
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Burning Brakes
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From: Chandler AZ
Default Rear O2 mv output level.

I seem to be having an issue. I can get the rear O2's to pass OBDII test, but now I am getting a cat code. D'OH! Does any one have a datalog of the rear O2's or know what they should see? If so please email it to me .

Thanks in advance,
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Old Jun 11, 2005 | 02:26 AM
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Dan Parker '96's Avatar
Dan Parker '96
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From: Lake Ozark MO
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What is the code?
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Old Jun 12, 2005 | 03:32 AM
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Mo_Bandy
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From: Fremont Oh
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Varoom,

Ok the rear o2s should be almost steady, and no fluctuating as fast as the front o2's.. if your cat is bad the rear o2 will fluctuate about the same rate as the front, meaning the cat is not doing it's job...

Been there done that

Mo
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Old Jun 13, 2005 | 09:41 AM
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Burning Brakes
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From: Chandler AZ
Default Thanks Mo

Thanks Mo,

Does .440-.445mV fluctuation seem right? It seems almost too small for the computer to notice.
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Old Jun 14, 2005 | 10:20 PM
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From: Fremont Oh
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That sounds about right, they idle a little leaner than 14.7 which is about 450mv... I'd say you are good... or your cats are in good shape as well...
Mo
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