I tried to take o2 sensor off but it won't budge. I tried wrench and hammer, doing it right after driving, and sprayed wd40

 

you can either squirt it with oil every chance you get for a few days (hot and cold) and it will come out or use a MAPP gas torch and heat it cherry read and pull it out...

 

try a good penetrating spray like PB blaster or AeroKroil and spray it every day til you get it out. Then make sure to coat the threads of the new o2 with anti-seize.

 

Leverage is your friend. With an O2 socket with a longer breaker bar and a cheater pipe to make your breaker bar longer. Some people have had success with melting wax onto the threads and using the heat of the torch to push the hot wax further into the threads. * physics notes* heat will always seek out cold to even out. Since the tip of the o2 sensor will remain cooler compared to the threads, it will draw the heat in and the wax as well.

 

Ok thanks will have to do it after all this rain is done with hurricane sandy

 

Tried taking o2 off with a pipe wrench and it stripped the nut and snapped o2 tried to get off with socket, wrench, and vise grips since it snapped but still won't come off

 

Check engine for lyfe

 

Cut the bung and weld a new one in.

 

did you heat it cherry red hot before trying to take it off?

I've never had one not come out

 

[QUOTE=dr_bowtie;2164730]did you heat it cherry red hot before trying to take it off?

I've never had one not come out[/QU

Anything you heat cherry red usually comes out