[knowledge1980]

Hello everyone

I been racking my brain trying to fix my car and it still acting the same. A week ago today my engine light came on and my car started driving rough so I assume I needed a tune up. I did the tune up and the engine light is still on and it still some what running and driving a little rough. I recheck all the wires and plugs and they are fine. I even bought a diagnostic reader and and when I did the test on my car it showed code p0137 and p0302 when i look up the codes p0137 it said something about 02 sensor low volt bank 2 and the other code is cylinder 2 misfire. Please help me out i'm like totally desperate and don't know what to do at this point. It's a 2004 oldsmobile alero v6 3.4 engine thank you in advance