O2 Sensor will not come off!!!!!

[Rfstang01]

Hey guys i just recently purchased another mustang and i went to go replace the upstream 02 sensors on the X pipe and usually this is a pretty easy task except this time these EFFINNNN sensor will not come off. I tried everything!!!!....liquid wrench, wd 40, PB, 02 sensor tools, breaker bars, compressor...Can anyone please help me. Thankyou

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[01bluesnake]

If you tried all that, then you may need to use a torch to heat it up and remove it that way. i also have a product called freeze off, which is like pb blaster but actually has a freezing agent in it that causes the metal to shrink help releasing tension. If a o2 sensor doesn't come out with hand tools, you should usually stop there, and spray a penetrating oil or heat it up before using any type of impact tool, as this will cause the sensor to cross thread if seized.

 

[2003RedL]

a torch has always worked on stuck ones for me. :biggthump

 

[Zack]

MAPP Gas for the WIN

 

[Rfstang01]

alright thanks guys thats what i was thinking...imma try it tonight!