O2 sensor is stuck. I have tried 2 types of penetrating oil and a big *** breaker bar. Cant get the damn thing loose. Any tips? Thanks!

 

Try running the engine a little bit to get it heated up a little. Sometimes that helps. I've ran into one at work that wouldn't come out no matter what I did. Luckily I was replacing the cracked exhaust manifold and the customer was cool with installing a new sensor. I hate dealing with exhaust stuff.

 

I assume you cut the wires and used a socket over it? take the manifold off and then try again I've had to do that even with my tsx there's no real swing room under the car. next up is oxy/acy if you have access to a torch.

 

Get a mapp torch. Heat up the exhaust directly at the O2 threads. Heat it aggressively for a minute or two. Put a 22mm wrench on it. Try to turn it.

If that doesn't work, heat it up again. Put the wrench back on it. Hit the wrench counter clockwise using a hammer.

I've had maybe 1 or 2 that wouldn't come out using that method. Out of like...idk...5 million. Even out here with the wild wild midwest road salt.

 

Thanks guys i used the mapp gas torch and also removed the header and that sucker popped right out!