ok, I did a kinda dumb thing. Bought an 03 Jeep TJ a few months back. As with all properly running Jeep TJ's, the check engine light was on. Took it to the parts store, they slapped on a reader and told me one of the two upstream O2 sensors was bad. I bought from them, new Bosch #13687. I didn't write down which specific upstream it was, the code is now gone. I'm guessing this particular Bosch part is probably the same for both of them but is there a way to tell? Should I just wait for the error to come back?
By the way, runs pretty good. Gets horrible mileage, probably 12ish MPG, but it runs pretty good. Engine is the 4.0L
By the way, runs pretty good. Gets horrible mileage, probably 12ish MPG, but it runs pretty good. Engine is the 4.0L