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Installing O2 sensor nightmare

Discussion in '1st Gen Tundras (2000-2006)' started by F1reheart, Oct 2, 2017.

  1. Oct 2, 2017 at 6:00 AM
    #1
    F1reheart

    F1reheart [OP] Love my Tundra

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    I got ready to install a nice Denso O2 sensor in the Bank1, Sensor 1 location. I got under the truck to take a look, and the sensor location on the driver side of the engine looks impossible to get a ratchet in there. I can’t even get my hand in there to touch the darn thing. I’m going to try from the top to see if it will be any easier. Any suggestions?
     
  2. Oct 2, 2017 at 6:36 AM
    #2
    NewImprovedRon

    NewImprovedRon SouthBoundSteve Fan Club President

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    Law323 likes this.
  3. Oct 4, 2017 at 1:50 PM
    #3
    F1reheart

    F1reheart [OP] Love my Tundra

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    Trying it from the top of the engine was not a success. It’s impossible to see it, much less reach it. Going back to underneath to try from another directions. Figures my first O2sensor is the most difficult one.
     
  4. Oct 4, 2017 at 2:09 PM
    #4
    Festerw

    Festerw New Member

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    You'll need an offset O2 socket and a half inch ratchet or breaker bar pretty easy from underneath. In my experience it was harder to get the electrical connections undone.

    [​IMG]
     
  5. Oct 4, 2017 at 2:39 PM
    #5
    ColoradoTJ

    ColoradoTJ #WAISTBAND

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    This^^^^^
     
    NewImprovedRon likes this.
  6. Oct 5, 2017 at 4:25 AM
    #6
    F1reheart

    F1reheart [OP] Love my Tundra

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    Awesome. Ordered it last night. Thanks!
     
    ColoradoTJ likes this.
  7. Oct 5, 2017 at 6:57 AM
    #7
    Festerw

    Festerw New Member

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    If you have an Advance or O'Reilly nearby they have them as loaner tools
     
  8. Oct 5, 2017 at 8:19 AM
    #8
    Les7311

    Les7311 Look up, what do you see

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    Dito
    An extension of any kind to reach the neck of the O2 sensor tool is required. Note how you will have to loosen as you may require a flex neck extension.

    Also, find a extra long small head screwdriver, plus, a long neck curved thin scissors ✂️ pliers to get the sensors disconnected.

    Harbor freight is my next best friend for tools.

    https://www.google.com/search?q=lon...Q420IRg&biw=414&bih=617#imgrc=uzJ-sIHY_Cu5cM:
     
  9. May 14, 2018 at 2:57 PM
    #9
    tunsr5

    tunsr5 New Member

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    The most difficult part of changing O2 sensors was disconnecting the figuring how to unplug the electrical connector. May need PB Blaster to enable getting the sensor to loosen. I just changed all 4 on my 05 w/ 4.7 eng.

    Mike
     
  10. May 14, 2018 at 3:11 PM
    #10
    Professional Hand Model

    Professional Hand Model Fred Brookes

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    Yeah. Looked like a nightmare job when I considered doing it after was told the sensors were bad. Waited a few years due to lack of urgency and need. Had the 2002 in the shop for something else and the mechanic asked if he could do it. The truck does seem to perform better. The exhaust isn’t a stinky on winter mornings. Good info on that socket. Looks like the right tool for the job!
     

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