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Replacing O2 Sensor V70-XC70

posted by  e21Pilot on  Sun Dec 17 07:35 CST 2006
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last visit: Sat Sep 27 01:59 CST 2014
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...And for my next Volvo project I wanted to replace the O2 sensor. I got under the car and found the sensor upstream of the catalytic converter. I then followed the wire along to where the connector was -- between the transmission and the firewall.

Boy, no matter how I tried to get my hand on the connector I couldn't do it. There was always something in the way. I'm wondering if there's a good way to get at these connectors? Everything else looks straight forward except unconnecting the old sensor and connecting the new one. Does anyone have a suggestion on how to get access to the O2 sensor connector?

I have the XC turbo engine so the extra plumbing may be part of my problem.

Thanks,

RGW








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    Replacing O2 Sensor V70-XC70

    posted by  MadeInJapan on  Sun Dec 17 07:57 CST 2006
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    last visit: Sat Oct 2 06:34 CST 2010
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    It can be reached from the top...but also a tight fit.
    --
    1998 S70 T5 Emarald Green Metallic (125K), 2004 V70 2.5T Ruby Red (45K), Previous Owner of Black '94 850 Turbo Wagon (Sold at 140K and miss her). My cars have been running so well lately they've got me worried.








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      Replacing O2 Sensor V70-XC70

      posted by  someone claiming to be bl on  Sun Dec 17 10:02 CST 2006 [RELATED]



      Yep, a long arm helps but if you stand on something 6-8" tall it helps a lot. The connectors are kinda peculiar until you see how they work. You pull up on a gate like device that does not come off the connector. You may need to pry it a little with a small screwdriver to get it started. Once it's all way up, the o2 sensor end of the connector will unplug. The two connectors are also mounted on a standoff. Removing them from the standoff will give you some slack. Look on volvospeed.com/bay13 for pics.







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