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Changing front O2 Sensor

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Need to change the front O2 sensor on my son's 2000 O/B w/ 2.5

 

Anyone that has done this care to offer advice?

 

It is pretty tight up there and looks like I will need to drop the Y pipe from the heads to get on it.

2001 forester I reached over passenger front panel. Maybe remove the air ducting first.

Here in CT local Autozone will loan two different versions of O2 wrenches. Give them a deposit and return to get your money back. As I recall, one has a swivel on it as well.

put a good penetrating oil to it first (I used Blaster), a couple days in advance and hit it again and again. as it is in a difficult place at least make it so you can break it, I was just able to get a 7/8 box end on it and was only able to do a few degrees at a time, but it came

  • Author

Did the PB blaster the day before. Southern car so little corrosion.

 

Thanks for the tip about Autozone. They had this really cool tool that worked perfectly without dropping the exhaust. It's and OEM 27162 angled, swiveling line type wrench.

 

Job took about 45 minutes with son helping.

 

27162.jpg

Edited by eppoh

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