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Determining which oxygen sensor needs replacing?

Discussion in '2nd Gen Tundras (2007-2013)' started by tom perkins, Dec 17, 2020.

  1. Dec 17, 2020 at 8:15 AM
    #1
    tom perkins

    tom perkins [OP] New Member

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    New to site and happy to be here. I have a 2008 tundra double cab 4.7 2wd with 177,000 miles on it and it still runs great. putting new radiator in today, but I do have a question or two I hope someone knows the answer to. OBD says an oxygen sensor is out but when I looked there are 4 of them. is there a way to tell which one it is? I tried to unscrew one to see what it looked like but it didn't come out so I thought I should check around before I broke something. I didn't try real hard though, didn't use Liquid wrench or anything. I was hoping to get some help before I went any farther. Any help would be appreciated.
     
  2. Dec 17, 2020 at 8:35 AM
    #2
    RitcheyRch

    RitcheyRch New Member

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  3. Dec 17, 2020 at 9:14 AM
    #3
    Ely010606

    Ely010606 New Member

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  4. Dec 17, 2020 at 9:26 AM
    #4
    Prostar 190

    Prostar 190 Super Secret Elite Member #9

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  5. Dec 20, 2020 at 11:57 PM
    #5
    reimord

    reimord New Member

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    Welcome aboard. What error code(s) are you getting?
     
  6. Dec 21, 2020 at 3:07 AM
    #6
    ShreveportTSS

    ShreveportTSS Huh?

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    Good OBDII scanners will say bank one or two and O2 sensor one or two...if I remember right. :anonymous:
     
    landphil likes this.
  7. Dec 21, 2020 at 7:10 AM
    #7
    huntertn

    huntertn New Member

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    Like ShreveportTSS said, a good OBD2 scanner will tell you which one is sending out a bad reading. Do you know what code # it is showing?
     
  8. Dec 21, 2020 at 5:23 PM
    #8
    Spartan83

    Spartan83 New Member

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    For sure, good or not, any code scanner will tell you bank and number. Bank 1 is on the odd cylinder number side(1,3,5,7), bank 2 is even side(2,4,6,8). Then the sensor number starts closest to engine and goes back. E.g. bank 1, sensor 1 would be the one on the engine side where your odd cylinders are and up front most likely right in, or slightly after your exhaust manifold. Sensor 2 would be the next one down stream most likely near or in your catalytic converter.
     
  9. Dec 31, 2020 at 11:13 AM
    #9
    tom perkins

    tom perkins [OP] New Member

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    Thanks everyone! I'm going to order an OBD and see what I can figure out and maybe get the Hewitt kit. Haven't gotten anything accomplished over the holidays. I still have my 1st gen. dodge Cummins that I can use to haul stuff around but my beautiful wife won't let me pull the camper with it because it's old and ugly like me. Is Hewitt the only company that makes these type of kits?
     
  10. Dec 31, 2020 at 11:29 AM
    #10
    Spartan83

    Spartan83 New Member

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    Just get a cheapo bluetooth OBDII scanner like this one (this is what I have had for years and you can connect via bluetooth to your phone and install the "torque" app to check/clear codes as well as all sorts of custom metrics/realtime data) the plug in handheld ones are overpriced and just read codes and nothing else unless you shell out $$$$ for a professional one to get the same stuff torque can pull from the cheapo bluetooth ones.(you can also install on computer I believe, but I find the phone app super handy)
    https://www.amazon.com/dp/B07L4926C1/ref=cm_sw_r_cp_apa_fabc_2xI7FbN58577X?_encoding=UTF8&psc=1
     
    Last edited: Dec 31, 2020
  11. Jan 4, 2021 at 9:18 AM
    #11
    tom perkins

    tom perkins [OP] New Member

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    thank you
     

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