I just removed my exhaust to have some welding done on it.  When I replaced it, I added some anti-seize compound on the two EGT thermocouples and also the O2 sensor boss.

When I started the engine, the O2 sensor worked for a few minutes, then stopped working.  I assume that it did not like the anti-seize compound???

My question is…will it come back after a while?  If I need to replace the O2 sensor, should I try and remove all the compound from the thermocouples as well? (they are ahead of the O2 sensor)  Should I run the engine for a while after I remove the compound to try and burn it out of the pipe or should I clean out the pipe?

 

How bad is my situation?  What to do….What to do???

 

Thanks for the help!

 

Bill B