Stuck oxygen sensor

[isham-research.freeserve.co.uk at pop.pol.net.uk]

> Even using plenty of "blaster" penetrating oil, I have
> done a nice job of rounding the edges of the 7/8" nut
> (or metric equivalent) on one of the oxygen sensors on
> my new V6 toy.  Was using one of those specially made
> deep "oxygen sensor" sockets that is partially cut
> away  (where the wires go).

> Am afraid to cut the wires off the end and get a
> standard deep socket, because I may not succeed.

<obrant>If I ever catch up with the **** [insert exceedingly offensive
 epithet] who designed the OXS sensor placement on the 90 quattro 20V
 I will do something that will require him/her to claim a permanent
 disability pension.  There is no way to remove and replace the upper
 downpipe to catalyser clamp without removing the sensor, and no way
 to get anything but a proper split 22m socket on it.  Of course, after
 ten years' residence, the OXS sensor doesn't want to budge and the
 socket just opens out ...</obrant>

Anyway:

a) Use a proper (expen$ive, unfortunately) OXS sensor socket.

b) Once the socket's in place on the sensor, apply as many hose
   clips (Jubilee clips) as will fit around the base of the socket
   to stop it opening out and jumping round.

c) Apply heat if possible.

--
 Phil Payne
 UK Audi quattro Owners Club
 Phone +44 7785 302803   Fax: +44 7785 309674