O2 sensor wrench

Andrew Dickinson amdickinson at rogers.com
Sat Nov 28 07:16:53 PST 2009

Being in a place where the government systematically tried to dissolve cars 
my bet is this sucker will be one of the 'welded' ones.  Prepared to uapply 
liberal use of an impact gun :-D?   I have a tap and die kit here too just 
in case. We are gping to pull codes from Hayes car today as well.  Have a 
look and see if it tells us anything.  The weird thing is that Hayes car 
seems to have the ECU relocated.  It is up behind the glove box.  It also 
doesn't seem to have the footwell connectors.  We are going to jump the 
sucker at the ECU connector and add a nice blinky light.

My chore for today is less involved.. build a toy race track with my son. 
The track has a Porsche, MB, Nissan, Toyota... WHAT?!?!? No VAG?!?!?  Ah 
welly...  The track is much bigger than expected and takes up most of my 
living room!

----- Original Message ----- 
From: "Ben Swann" <benswann at verizon.net>
To: <hayesmyers at gmail.com>
Cc: <quattro at audifans.com>
Sent: Saturday, November 28, 2009 10:04 AM
Subject: O2 sensor wrench

> Most parts stores sell a slotted socket specifically for O2 sensor 
> removal.  22 mm is
> the O2  size for stock sensor.
> Often these are so "welded" into place that you sometimes need to destroy 
> the old sensor
> getting it out, which is OK since you were replacing it.  You may need to 
> cut the wire
> at the sensor and hammer on a 21mm.  You may need to knock the housing 
> off, and in one
> case I had to drill out the center and re-tap threads.  A tap for a 
> lawnmower spark-plug
> will cut the correct threads.
> Hopefully yours is not this much of a PITA.
> Ben
> [Date: Fri, 27 Nov 2009 14:29:18 -0500
> From: "Hayes Myers" <hayesmyers at gmail.com>
> Subject: o2 sensor
> To: <quattro at audifans.com>
> Message-ID: <032b01ca6f97$ea899370$bf9cba50$@com>
> Content-Type: text/plain; charset="us-ascii"
> Well..finally decided that o2 should be changed. (mine is 6+ years old I 
> think!).   Are
> there multiple sizes of o2 wrenches? (crows foot type tool)?
> Anyone know what size the I5 uses?  Yes. absolutely ridiculous question of 
> the day.
> Happy Friday and thanks!
> Hayes Myers, P.Eng
> 91 200 TQM 10v
> ]
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