Just had my codes checked at the Local Auto Zone and found that I am running lean in bank 2. The guys there suggested possible O2 sensor. I will be getting my Hooker cat-back put on next week..should I get them to check it out and fix the problem then. Would it hurt to drive it over the weekend. Also should I avoid getting into it a lot or is it not that big of a deal? Thanks

 

Check to make sure you have no exhaust leaks before the passenger side O2 sensor. If you do, you will allow oxygen into the exhaust stream and the O2 sensor will interpret that as a lean mixture. If you're all set there, maybe your ready for a new sensor.

 

Sorry to ask such a stupid question but, what's the best way to check for exhaust leaks?

 

I would look for carbon traces at any exhaust joint prior to the O2 sensor. I would also look for any pinholes or cracks in the pipes/joints. If all that checks out well, you probably could just use a new sensor. But the possibility exists of intake vacuum leaks or injector issues as well, but I'd try the above steps before I got carried away.