most likely the battery,most likely the cam seals are leaking not really a big deal. as for a bad 02 sensor there are 2 sensors the primary and secondary if its a bad secondary long term is not an issue but primary controls air/fuel ratio and will cause catalytic converter damage in the long term from running rich which will also give you horrible MPG among other issues. primary sensors on the 04-05 are expensive because there wideband so only use either DENSO or NTK this is very important because these cars are very picky with o2 sensors. what part of NE you from im in CT.

 

Thanks a ton for all the help guys.

 

I'm actually in Omaha... I'm from a very small town in northeast NE. What about you?

 

Do you think with these cam shaft seals leaking, its time to replace the timing belt needs to be replaced?