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Thread: P0134 and P0154 Codes

  1. #1
    Join Date
    Aug 2007
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    Needville,TX
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    P0134 and P0154 Codes

    The SES lite has been on since I first started the swap. I finally got it looked at and the parts guy says I need both 02 sensors. They are brand new AC Delco's so I replaced them with two extra ones that I have. I like to have extra parts especially 02 sensors.
    Code is still there after reset.

    I dont have time to do a SEARCH so dont flame me, just enough time to post this.

    Appreciate the help.

    FYI its a Nelson harness with Camaro 02 sensors that I was told by them to use. LT headers. 02's are 1ft behind the stock 02 location provided by Schoenfield headers.
    89' GMC RCSB 6.0L LQ4, T56, 4.56 Gears

  2. #2
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    Aug 2008
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    Insufficient activity. Make sure and check the power and ground to each sensor heater.

  3. #3
    Join Date
    Aug 2007
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    Needville,TX
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    Quote Originally Posted by GasGuzzler View Post
    Insufficient activity. Make sure and check the power and ground to each sensor heater.
    Ck'd voltage at the o2 connector, got 12v so I dont know what else it could be.

    What would be some of the affects with these two codes??
    89' GMC RCSB 6.0L LQ4, T56, 4.56 Gears

  4. #4
    Join Date
    Mar 2003
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    San Antonio, TX
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    Lazy o2, not hot enough, can you move them close.

  5. #5
    Join Date
    Nov 2007
    Location
    Hurley, Mississippi
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    365
    I have the same codes but only have 0.45 volts
    '86 Silvy- '06 6.0/4L80E, K&N, 2.5 X-pipe Magnaflows, 20" Foose Wheels, Auburn Pro, 3.90 Richmond Gears, and the list is growing!!!

  6. #6
    Join Date
    Aug 2007
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    I had them located in the LT's and the SES light still came on.

    Also when I had manifolds the SES light still came on. One manifold was an Fbody and they other was a stock 6.0 manifold
    89' GMC RCSB 6.0L LQ4, T56, 4.56 Gears

  7. #7
    Join Date
    Aug 2007
    Location
    Needville,TX
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    433
    Did more of a search when I had the time and found out to use
    Corvette rear o2 sensors

    light hasnt come on but I havent driven it yet, only started and idled it a few times
    89' GMC RCSB 6.0L LQ4, T56, 4.56 Gears

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