Someone please help my bug!

[mybeetlejuice]

ok here is my problem>
3weeks my bug started running very bad,misfiring and at times no power, check engine light is on went to auto zone to read codes. It said po300, po301,and system 2 lean bank 1. So I replaced spark plugs and coil packs,changed my o2 sensor. Today I got a new catalytic converter. and guess what.. about 1 hour later check engine light came back on ( car is running good) , went back to auto zone to have codes read, and it is saying exactly the same codes that I just had before i did all the repairs.. Can some one please tell me what is going on.

[D2Beetle]

What about your MAF? If I remember correctly there are two O2 sensors, check the other one. How many coil packs did you replace? Is your NB eligible for the coil pack recall?

[mybeetlejuice]

I replaced all 4 coil packs. what is the other part that you are talking about? is it possible for coil packs to go bad in 2 weeks? I am so frustrated and dont know where to start.. thanks for your help

[D2Beetle]

Originally Posted by mybeetlejuice

I replaced all 4 coil packs. what is the other part that you are talking about? is it possible for coil packs to go bad in 2 weeks? I am so frustrated and dont know where to start.. thanks for your help

If you valve cover gasket goes bad and leaks oil onto the coil pack, then yes.

MAF = Mass Air Flow Sensor.

If I'm not mistaken there are two O2 sensors, one before the CAT and one after. Which one did you replace?