On 3/17/08 11:51 AM, in article
eb56293a-90fb-4256-84f7-5596f4a355e2@p73g2000hsd.googlegroups.com, "highkm"
<ic3po@mac.com> wrote:

I'm curious -- how were you able to apply 1000 lb pressure?

I've never needed anything more than my trusty 4 ft piece of gas pipe on the
end of the breaker bar to remove these things (also works on Honda crank
bolts).

Here's a trick that's worked for me in the past (requires the sensor to
be in a suitably accessible location):
1) Raise car so you have room to access the sensor
2) Apply socket, ratchet and cheater bar to the sensor (snip wire so you
can use regular socket, not O2 sensor socket)
3) Place jack under cheater bar end and use jack to load up the assembly
good and hard, with socket turning in the LOOSEN direction
4) Whack exhaust pipe with at least a 2lb hammer -- hard -- immediately
adjacent to sensor.
5) Sensor should crack loose with a bang (keep out of the way of things
that may suddenly move in unexpected ways!)
6) If not, repeat from #4 as necessary.

Another trick that can work is to TIGHTEN the senor first, THEN try to
loosen it. If you can get a fastener to budge a bit in the tighten
direction, that increases the chance of getting it to move in the other
one.

And if you end up stiripping the hole, no worries. A spark plug tap will
fix that with ease.