2000 A6 4.2: B2S1 O2 sensor removal

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04-06-2014, 04:04 AM

#11

vtraudt

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Quote:

Originally Posted by Gsrob

Those wrenches certainly make it easier to get at the O2 sensors but can be had for much cheaper than ECS. I think I paid like $12 for mine from Advance Auto. For something I may use once a year, that's more than adequate.

Using it since years from my 'cheap but some tools actually good' store (best tool bar none):
http://www.harborfreight.com/3-8-eig...nch-97177.html

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04-06-2014, 08:26 AM

#12

Gsrob

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Dang, I could've saved five bucks! I love harbor freight. I've got a number of great tool stuff from there but my favorite is the low profile jack. There are some questionable tools as far as reliability goes but overall they're worth a look. I'm about to use that same wrench today as I get under my car to yank out an old 02 that's been troubling me.

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04-08-2014, 05:57 PM

#13

ather

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Crows foot socket worked for me

That is what I used to get the passenger side out along with a swivel ratchet. Try going at it from the very back of the engine from the top. Remove all of the air duct hoses (sorry don't know tech name is). Lean over your engine from the front to reach it. It is slightly off to the outer side of the manifold. If you have skinny arms, even better. I had bruises on my arms for a week afterwards. Good luck.