I used a torch and open end socket (22mm I think).  I have seen O2 sensor
sockets in the auto parts store.  It looks pretty slick, with a slot for
the wire and everything.

When I bought my van, someone had actually tack welded the o2 sensor to
the exhaust pipe.  I assume that they also put anti seize on the threads
because I was easily able to break the tack weld and take off the o2
sensor.

But, I forgot to put antiseize on and it was miserable getting it off.  I
finally used a torch and the correct size open end wrench.  I haven't
forget to put anti seize on since.  And I suppose I should remind people
that you have to be careful to not get any antiseize on the sensor of the
o2 sensor, I have heard it will foul it up.

blake

> I used a pipe wrench and a long cheater.  Had about five feet of torque.
> Sucker came right off!
>
> Karl Wolz
>
> ----- Original Message -----
> From: "Larry Alofs" <lalofs@ENTERACT.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Sunday, February 03, 2002 3:17 PM
> Subject: Re: Stuck O2 Sensor
>
>
> > Les Shiaman wrote:
> > >
> > > My current o2 sensor has been on for 80,000 miles so i am trying to
> > > replace it.  Yesterday I put liquid wrench on it and wd-40.  It turned
> > > about 1/10 and won't go past that point.  There is play, I can move
> > > tighten and loosen it within that 1/10 turn, but how to get it past that
> > > point?  I've been using a crescent wrench, but now I think I'll go get a
> > > fixed-size wrench.  Someone suggested heating up the area with a small
> > > torch.  There seems to be some promise since there is a little play.
> > >
> > > Thanks,
> > >
> > > Les
> >
> > I have the right wrench, but mine won't move at all.
> >
> > Larry A.
> > Historic, walkable, Chicago, Illinois
>