O2 sensor problem

[Champ1415]

So today I was replacing my downstream O2 sensor an snapped off the bolt. Any ideas on replacing?

 

[GEARZ]

if there is anything left of the bolt try heating it up with a torch and use vise grips to back the rest out, if it broke flush then you'll probably have to drill it out.

 

[Champ1415]

And if it's to rusted to budge

 

[GEARZ]

I've had a lot of luck with pb blaster, it loosens up rusted bolts. You just have to let it soak for a while, if that doesn't work heating it up with a torch or drilling it out are your only options.

 

[Champ1415]

Ok thanks

 

[Nelsonmd]

I have had good luck with heating the thing up and spraying it with PB blaster (not red hot, just propane hot). The pb blaster catches fire, so be careful, but it has work pretty well. The heat seems to aid with penetration. I have been told you can do the same thing with candle wax.

Since this is exhaust and you shouldn't have anything near it to burn, you can use a O2 oxy torch to heat it up hotter than propane. You can get a little MAPP/O2 torch from Home depot that should do the trick. Get that thing red hot and try to back it out.