E46Fanatics - View Single Post - DIY: Post-cat O2 (oxygen) sensors replacement (w/pics)
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Old 10-17-2012, 04:40 AM   #15
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Join Date: Jul 2012
Location: Portland, OR
Posts: 3,366
My Ride: 2003 330CI Silver
I hope your name doesn't hold true about your size man because you'll be at a real disadvantage. This job sucked. What some of these guys say are true. Incredibly difficult to get at the o2s. The one more towards the front of the car was a little easier. It's that back one that really sucks. Even if you get something back there and on to the o2, there's so little room to turn your ratchet, or even finding one thats almost the perfect length and height to do that job. If i was to do this again, I would try using a 22 wrench, but also, I would seek out a pivoting ratchet with multiple extensions of different size. That or an adjustable one. If i had that extension with maybe even a u joint at that time, I think I wouldn't have had such a hard time. Since you're also on your back and shaking your car around as you attempt to crank that thing loose, i recommend sturdy jack points, with maybe even your rims laid down for extra security. Also, find something for leverage. I was using the long metal jacking stick from my jack. Worked wonders.
Portland Metro: ECU updates, Euro tune, euro corner delete, air bag light, DSC light, cluster and any led color change, soldering work, transponders for keys, and all custom work related to computer or electronics.DIY AK90 A walk through on coding your mcu and transponders EWS3 How to make your own key (ak90 review)
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