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    Thread: O2 Sensor

    1. #1
      What's wrong with my car?
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      O2 Sensor

      Hi......

      My wife has a 2005 Aveo and the engine light is on. Codes say that it is the O2 sensor(s). I would like to change these out myself, but I am not sure which ones are the sensors. Just such a small area and lots of crap in there. Can anyone help out?

      Thanks, Matt



    2. #2
      Almost time to do my timing belt
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      Re: O2 Sensor

      the first one is off the header....the other is somewhere further down the exhaust behind the cat

    3. #3
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      Re: O2 Sensor

      One is in the exhaust manifold on the driver's side

      and the other is in the cat

    4. #4
      Still love my daily driver
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      Re: O2 Sensor

      The codes should tell you which one it is, as well... Upstream (before the cat, in the manifold) or downstream (after the cat).
      Horsepower is how fast you hit the wall. Torque is how far the wall moves after you hit it.

    5. #5
      What's wrong with my car?
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      Re: O2 Sensor

      You guys are awesome. Let me have a look in the morning and see what I can find. I will get the code #'s too. Thanks so much for the pics!!!!!!

      - Matt

    6. #6
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      Re: O2 Sensor

      I would recommend picking up the cheapo bosche sensor from advanceautozonepartsnapaboys without the OEM connector. It's a lot cheaper and the little wiring kit it comes with is pretty easy to use. I installed my upstream o2 sensor in about an hour. Just be sure to pick up some wire wrap to go with it.
      Horsepower is how fast you hit the wall. Torque is how far the wall moves after you hit it.

    7. #7
      What's wrong with my car?
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      Hello, Guys

      do you know what is the OEM part number of this oxygen sensor you show in the picture?





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