My car has been running really rough ever since I replaced my head gasket. Misfire, lag, bogging down, etc... can it be from all the coolant coming out from my exhaust and messing with my 02s?? Can I clean them or are they shot? There was A LOT of it when the head gasket blew, I couldnt even see across my street when it happened; the smoke was so think.

 

If you were using the conventional green anti-freeze, the silicates in the coolant may have contaminated the O2 sensors. Probably best to just replace them. If you were running orange Dex-Cool, there are no compounds that would contminate the sensors.

 

when you replaced your headgasket you could have gotten collant on your opti. that would cause what your experincing
greg

 

That would be terrible, I have a new one.
Thanks guys.
I hope its the O2s, I have a new opti... I hope its not ruined.