i went to advanced auto parts today and got my car scaned for ses light... it turned off on the way there and the computer scanned

History DTC p0300
Random/Multiple
cylinder
misfire
detected
MIL not requested
Since IGN NOT RUN
SINCE CLEAR p/f

 

If you have an aftermarket cam, it could be due to it. Otherwise, you probably need a tuneup. (plugs/wires maybe opti)