I can't get my upstream O2 sensor off.

I sprayed it with PB Blaster like three days in a row and put a wrench on it and hit the wrench with a hammer. Nothing works

Any tips???

 

O2 Sensor socket.
or
Run the car hard, get it up on jack stands and try to get it out while the car is still hot.

 

im not a fan of 02 sensor sockets myself. I took mine off with a 21mm wrench and a hammer, beat the **** out of it, it works, mine didnt fit as tite as i like so be careful not to round **** off if its not snug

 

Breaker bar. Piggy back two wrenches. WATCH YOUR KNUCKS.

 

You probably need to heat it up before taking it off. If you can, borrow a blow torch.

 

Yeah use a touch preferably map gas get the bung glowing red then use an o2 socket and a breaker bar it'll come off

 

Assuming the o2 you are taking out is bad...

Id cut the wires right off of it and get a socket on it with an impact gun


Assuming it is good...

If you have access to a torch, turn the bung cherry and it'll. Come out with whatever has a tight grip and leverage

If you don't have access to a torch, drive you car a while and get on it real good right before you stop to take the o2 out

If those don't work just cut the wires, impact it off and get a new o2

 

Take the pipe off the car, use airgun with socket from above, it will come off right away.

 

Some of you guys are foolish. All you need is a propane torch and o2 sensor socket. Both are pretty cheap tools that will go a long way. (I've used my propane torch and o2 socket countless times over the past 6 years) I don't think I've ever had an issue with an o2 sensor using a torch and socket. However any other way I've tried when I didn't have a torch or anything I had a hell of a time.

 

O2 sensor sockets usually have a hex head on the back end of them. I used the O2 sensor socket and then a very short, quick burst of the impact on that O2 socket's hex head. I think most of them are 21mm. Worked like a charm.

 

^^^ Exactly....

 

Who's foolish? I haven't seen one bad suggestion why u gotta come in insulting?