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Discussion Starter · #1 ·
I GOT A QUESTION" WHAT SHOULD THE Mv BE ON A GOOD O2 SENSOR AT IDLE? usa uzi silly
 

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It will cycle lean to rich .3 to .8 or so.

O2 Cross counts should be over 200 also.

On the scanmaster.
 

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Discussion Starter · #4 ·
SO ON MY SCANMASTER IT SHOULD BE READING 200 AT IDLE. MINE BOUNCES AT ABOUT 200 - 400. IM RUNNING 115 RACE FUEL AND ITS LEADED SO MABY IT TIME FOR AN O2 SENSOR dunno . usa uzi silly
 

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Millivolts will be all over the place from .3 or so to .8 or so. Should vary up and down a bit.

Crosscounts are how many times it passes the midpoint I believe in a fixed amount of time.

Should be over 200 on the scanmaster.
 

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This assumes a newer scanmaster and the code in a more recent chip to display those crosscounts.

CC I think it says to the left of the reading. :)
 

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Stock O2 sensors dont't work with leaded gas. So forget about looking for a reading that makes sense. They claim the new Denso O2 sensors work with leaded gas. I ordered one and will be posting about how it works soon.
 

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