Exhaust leak causing bad O2's?
 

Just curious if an exhaust leak would eat up O2's. I had a set go bad....replaced them and I think they may be bad again. I couldn't get my LTFT's to respond with ATAP the first time so I replaced my sensors and all was good. Now they're not responding again. It's only been 200 miles at most. would they go bad that soon?

Re: Exhaust leak causing bad O2's?
 

There isnt coolant leaking onto them is there? I read earlier that a guy had that same problem and coolant was messing them up. I only ask because you have a 422, so that might be an issue.

Re: Exhaust leak causing bad O2's?
 

How far down the pipe are your O2s located?
Generally headers put the O2s in a cooler
location, and they perform worse when cold
(not to mention that any crud has less of a
chance of being burned back off).

Re: Exhaust leak causing bad O2's?
 

They are in the collectors like on most headers. I don't think I'm leaking any coolant. The sensors are kinda sooty looking but I figured that could be normal.