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Thread: wondering about my 02's log attached

  1. #1
    Lifetime Member Gregs's Avatar
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    Default wondering about my 02's log attached

    I just wanted to get a second opinion on my bank 2 sensor. It doesn't switch back and forth it just stays right around 450 mv. At the same time my stft for bank 2 is pegged out at 99%. The thing that I don't get is why my bank 2 ltfts are perfect. What do you guys think?
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    03 Silverado 5.3 ECSB 4x4 Z71
    Comp Cam 206/212 .515/.522 112 lSA, hardened rods with LS9 springs

    2010 Tahoe VVT AFM 5.3
    Stock for now

  2. #2
    Lifetime Member Gregs's Avatar
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    just giving this a little bump, but since my first post i have swapped out o2 sensors a few times with other ones i have laying around and i still have the same problem. Its as if the sensor just isn't switching back and forth no matter what o2 sensor i have in there. anyone have any theories?

    03 Silverado 5.3 ECSB 4x4 Z71
    Comp Cam 206/212 .515/.522 112 lSA, hardened rods with LS9 springs

    2010 Tahoe VVT AFM 5.3
    Stock for now

  3. #3
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
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    Gregs:

    Thought I would help your bump...

    Are you logging both O2's on the same bank? I usually log just the front O2's of each bank.

    Our set-up is probably quite different, but was just trying to understand what you were doing..
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


  4. #4
    Joe (Moderator) joecar's Avatar
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    You might be logging the wrong pids...

    replace O2Sxx with SHRTFT1/2.

  5. #5
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    Played log in "data" format, couldn't see it well enough in the "dashboard B" format ... no O2 voltage from either bank, no short term fuel trim from either bank.

    Regards,
    Taz

  6. #6
    Lifetime Member Gregs's Avatar
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    problem solved. Looks like i mixed around a few pids when i went to bbl. thanks for your help guys!

    03 Silverado 5.3 ECSB 4x4 Z71
    Comp Cam 206/212 .515/.522 112 lSA, hardened rods with LS9 springs

    2010 Tahoe VVT AFM 5.3
    Stock for now

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