Did my primary O2 sensor today... - Subaru Outback

quazar · 03-11-2006, 09:14 AM

Suprisingly.. it wasn't that hard. I didn't have an O2 sensor socket or a crow's foot. I just stuck a 22mm wrench up above the cat and unbolted the O2 sensor and dropped in the new one. It took about 20 minutes total.

I'm excited to see if it's going to change my gas mileage and car's response.

Anyways.. cheers.

**FMGreen** · 03-11-2006, 11:31 AM

I'm looking forward to seeing your results.
What year is your OB?

The dealer replaced my front O2 Sensor in early January because it was throwing a CEL...my mileage has actually been worse (by about 2.5mpg) since the change.
...Leads me to believe my rear one is on it's way out too.

SHO Type U · 03-13-2006, 09:52 AM

I replaced both O2 sensors at the same time, the rear sensor is not bad if you have the 22mm crowfoot wrench.

03-11-2006, 09:14 AM	#1 (permalink)
quazar Registered User Join Date: Dec 2005 Location: atlanta, ga Car: '07 3.0R LLBean, '00 BRP 2.5RS Posts: 383 Feedback Score: 0 reviews	Did my primary O2 sensor today... Suprisingly.. it wasn't that hard. I didn't have an O2 sensor socket or a crow's foot. I just stuck a 22mm wrench up above the cat and unbolted the O2 sensor and dropped in the new one. It took about 20 minutes total. I'm excited to see if it's going to change my gas mileage and car's response. Anyways.. cheers.

03-11-2006, 11:31 AM	#2 (permalink)
FMGreen I'm Not Slash...yet. Join Date: Feb 2004 Location: Rochester, NY Car: 2007 Outback H6 LL Bean - Champagne Gold Opal / 2002 Outback Limited - Timberline Green Posts: 5,947 Feedback Score: 0 reviews	I'm looking forward to seeing your results. What year is your OB? The dealer replaced my front O2 Sensor in early January because it was throwing a CEL...my mileage has actually been worse (by about 2.5mpg) since the change. ...Leads me to believe my rear one is on it's way out too. __________________ www.FMGreen.net If you can't keep it clean, keep it green! www.FMGreen.net

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03-13-2006, 09:52 AM	#3 (permalink)
SHO Type U Yamaha Powered Join Date: Apr 2004 Location: Chicago, IL Car: 2000 OB Wagon, 2.5L auto Posts: 153 Feedback Score: 0 reviews	I replaced both O2 sensors at the same time, the rear sensor is not bad if you have the 22mm crowfoot wrench.

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