Thread: Need help w O2 sensor fail

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  1. #1 Re: Need help w O2 sensor fail 
    GrandPrix Junkie SDGTP99's Avatar
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    I did do an oil change this morning and amazingly enough it was low on oil. I know we did check the engine when it was hot, maybe thats why it said it was overfilled?

    I'll go ahead and see if I can get that leak fixed.. somehow..and get a delco sensor. Thats the only brand I haven't tried lol

    If it still runs like pooh after this idk what to do. Tune?

    Hopefully my engine isn't damaged. Not ready for a new car just yet.<_<
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  2. #2 Re: Need help w O2 sensor fail 
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    Exhaust leaks souldnt cause an o2 to read rich. A clogged cat will however cause a rich condition with no power. Running rich or lean for long periods will destroy o2 sensors. Un plug a vacum line and see if your 02 goes lean. If so maybe you really are running rich. If you dont find an oil leak remove a couple of plugs, maybe you are burning oil.
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  3. #3 Re: Need help w O2 sensor fail 
    Donating Users GR8racingfool's Avatar
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    ^ya, his plugs looked fine when we had them out for the mods going on. If he was bring oil, we would have seen that for sure.

    Might make sure all the vacuum lines are connected, I know we removed and reinstalled them all, but maybe one came off or something. Never hurts to give it a once over.

    As for your car running hot, you might want to re-purge the air in the coolant system again. sometimes you cant get it all the first time.

    ~F~
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