brand new to forum, preowned 3 series
hello. i own a 2002 330Xi and am having problems with the fuel system. the check engine light has been on for one month, and when i stopped by the local autozone to plug it into their computer, the codes stated the fuel mixture was not correct (which i knew because the car was jerky). now there is a high pitch when i depress the accelerator. it's faint but i can hear it and it drives me crazy. can i fix this myself? i would love some info. thanks everyone.
casey in ithaca
ps. i should mention the car has sat for two years until March of 2010 (in case it means anything)