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-   -   O2 Sensor. HELP! (http://www.wranglerforum.com/f19/o2-sensor-help-131772.html)

jeepercowboy 01-07-2012 01:53 PM

O2 Sensor. HELP!
 
So I picked up a new o2 sensor. I crawled under my TJ and I see one sensor directly in front of the muffler. However I see nothing to the rear of the muffler. So would this be the downstream sensor? I need to replace the upstream one.

wwch99tj 01-07-2012 02:00 PM

Upstream o2 sensor is just after the manifold before the catalytic converter

jeepercowboy 01-07-2012 02:07 PM

I don't have much experience on exhaust systems as bad as that sounds. Is the manifold the big unit just past the muffler upstream?

Radioman 01-07-2012 02:25 PM

Front to rear: maniford (connected to the engine), catalytic converter, and finally the muffler

jeepercowboy 01-07-2012 02:27 PM

Quote:

Originally Posted by Radioman
Front to rear: maniford (connected to the engine), catalytic converter, and finally the muffler

Thanks! That was pretty much exactly the type of description I needed. I'll give it a shot.


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