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about 02 sensors

This is a discussion on about 02 sensors within the External Engine forums, part of the LSx Technical Help Section category; I just got some pacesetter longtube headers installed on my 99z. The auto shop said they didnt need the 02 ...

  1. #1
    Junior Member jmcamz2899's Avatar
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    1999 Z28

    about 02 sensors

    I just got some pacesetter longtube headers installed on my 99z.
    The auto shop said they didnt need the 02 sensor extensions i bought because they said there wasnt a place for them but the y-pipe. Now my engine light is on.????

  2. #2
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    What code(s) is it throwing - is it for the rears?

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    Junior Member jmcamz2899's Avatar
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    RED
    1999 Z28

    check engine light is on

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    Bring it somewhere, like Auto Zone, and they will read codes for free. 02 extensions are normally for the front - did you delete the cats?

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    Junior Member jmcamz2899's Avatar
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    RED
    1999 Z28

    i really dont know about the cats i have pacesetter lts y pipe and slp loudmouth

  6. #6
    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
    01 SS

    Ok if you bought the pacesetter y then you ditched your cats. You need too pickup some 02 simulators for the rear 2 sensors. The harness its beside the tranny on both side. you will need two of them. As far as the 02 extensions, most people use them on the front sensor bc the wire isnt long enough too reach the harness. Like said above have your codes checked and post for further help.
    J
    2001 SS, Its not the car its the Driver that matters....

  7. #7
    Junior Member jmcamz2899's Avatar
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    I am getting a predator programmer next week. Wont that be able to disable to 02 sensor reading

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    Yes, the latest versions of Predator can turn off rear 02 codes.

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