Why does my check engine light come on when my car revs up to about 2500 and higher.. When I'm driving and when its in park. If you rev it up in park the CEL comes on right at about 2500 rpms and when it comes down below that it goes off. And when I'm driving it comes on anywhere in between 2500 and 3000 rpms but it also boggs down and spits and sputters to. And sometimes stalls.. What could this be?
