I have thrown so much leverage on it and it WON'T budge. I can't get any pb blaster even close to it.

 

Get some penetrating stuff on there somehow and let it sit for a while. Spray that **** in the the lid and pour it on the O2 from the top or something.

If it truly won't come off, then unplug both sensors and take the dang Ypipe off the car, then you can torque on it as many ways as you have to.

 

Broke the tool trying.





Yeah, it's bad.

Don't know about Bike Week by the way. I DO know that last year you didn't have to pay to get to the demo rides. They were totally free.

 

The 96-97 y-pipe is truly a pretzel and is not very accomodating in getting to all of the 02 sensors. As stated above, you will have to find some way to get some penetrating oil on there, or drop the y-pipe depending which sensor you are having problems with. Sometimes you have to heat them up first to get them out, but seeing that you cannot reach it with penetrating oil, it is probably safe to say you couldn't access it with a heat source either.

 

The only thing I can do is run the car in idle with the tool already in place and then try to pry it then...

 

Wow. What brand was that? Never seen an extension do that. Did you break the wrench? Which O2 are you trying to get at? The ones on the manifolds are a real PITA.

 

I've done that to a Craftsman socket...but I did have it on the crank hub bolt trying to turn the car over, not knowing it was in gear.

 

Can't get PB to spray up there? Are you trying to get to the one on the
manifold? Or the one in the y-pipe? Don't feel alone . . . I'm having a
bear of a time getting the one off the exhaust manifold - and I have that
manifold OFF the car.

Here's the O2 sensor in the exhaust manifold (off the car) - notice that there is
a ridge of metal which will not allow a boxed-end wrench on it (well, the boxed
end I have - come to think of it, you cant anyway because of the O2 plug).

http://picasaweb.google.com/calder.c...05541668601202

Here's another angle - you can see it better here:
http://picasaweb.google.com/calder.c...12185983008130

 

Snap on sells a nice O2 socket that is partly open along the side so you can get it over the sensor and gives a spot for the wire to stick out. It works great in most cases but i think when I got mine it was about $85 for it and that was about 2 years ago. I will try to remeber to get the part number tomorrow while I am at the shop

 

heat the pipe up with a torch and it will come right out

 

you've got to get that manifold cherry hot then wrench on that sucker, it'll come right off - make sure you don't burn yourself, use some gloves

 

I had mine off the car and could jump on the wrench and it didn't budge. I ended up using a sledge hammer and even that was a bitch. I ended up heating it some and thats what did it.

 

As a journeyman steel trades worker, I have to go with using a torch. We remove seized pins and sized hydrolic water heaters with a torch all the time. Works like a charm.

 

use a cresent wrench, not a socket wrench

 

With that much torque, wouldn't that slip and round the bolt?