My Service engine soon light has been on for a while and tried just about everything to get rid of it.

Ive done the "Pedal trick", disconnected battery for 12 hrs, checked the O2 fuse, and even had the code read by an OBD II reader. The code I received was just a single ZERO.

Im thinkin about changing both O2 sensors on the Cats. Ive got 72000 mi on the clock.

Another thing is that the muffler is spittin out exhaust out of one tip. Is that normal?

Any thoughts? Thanks!