I’ve tried everything I know to get the front O2 sensors to release; I can’t get them to break loose. I’ve tried 3 different penetrants; had a mechanic try to break them loose...and I just have no success.

anyone have any tips or tricks to get the damned things to break free?

thanks

Doc

 

 

heat will definitely work

 

Get a bigger wrench. Use a hammer on the wrench to break the corrosion free

 

I know what you mean! I replace all 4 of mine a few months back and it was a bear! I was worried about breaking those welds loose! Just keep at it and quit when it gets frustrating so you don't do something dumb! :-)

 

 

Heat, heat, and more heat.
Mine were a monster to get off

 

Heat and penetrant didn't work for me, cut the pipe out, took the massive impact out, got it out, which it took the threads with so did helicoil and weld back in

 

A new small pipe wrench. A good one with slanted teeth. Then a cheater pipe.

 

Want to know how hard it was for me in more detail...