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02 sensors

This is a discussion on 02 sensors within the External Engine forums, part of the LSx Technical Help Section category; If my rear 02 sensors are bad will that effect my acceleration or anything?...

  1. #1
    Senior Member Justin23454's Avatar
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    02 sensors

    If my rear 02 sensors are bad will that effect my acceleration or anything?

  2. #2
    Member firemedic0135's Avatar
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    Arctic White
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    yes the PCM will adjust the AFR to try and correct the problem it sees.

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    Senior Member Justin23454's Avatar
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    PCM what AFR who? Sorry im a nub, I dont know what those are?

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    Member 180ls1's Avatar
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    1998 Firebird Formula WS6

    Quote Originally Posted by Justin23454 View Post
    PCM what AFR who? Sorry im a nub, I dont know what those are?
    it is the front oney you should be worried about the rear ones monitor how the cats are doing for the most part

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    Member firemedic0135's Avatar
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    Quote Originally Posted by Justin23454 View Post
    PCM what AFR who? Sorry im a nub, I dont know what those are?
    PCM= computer
    AFR=Air fuel ratio

    no problem I still dont know alot of these abbr. I soend alot of time on google lol

    Basiclly your PCM looks at the exhaust before and after the catalytic converter using the o2 sensors.It determines if you are lean,rich or in the middle and adjusts the AFR accordingly
    If it see's something that is not right ,it adjusts your AFR to try and make the numbers right.It will continue to adjust these (on the affected side,Bank 1 driver side,bank 2 passenger side) until it cannot adjust them anymore or your maxed out.
    there may be others that can explain it better and if I am wrong they can correct me or help you out further.

  6. #6
    Member firemedic0135's Avatar
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    Quote Originally Posted by 180ls1 View Post
    it is the front oney you should be worried about the rear ones monitor how the cats are doing for the most part
    that is correct.
    I no longer have rear o2 sensors.I had them deleted when I bought the car.
    You can delete them with a custom computer tune or with a handheld programmer.

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