i have a 1991 honda accord and recently started running terrible once warmed up and check engine light comes on shortly after. It wont idle on its own but will run if im giving it gas and will run smooth at over 2,500rpm but if it under that it will die unless i keep it running but like i said runs very violently under 2,500rpm. Possible EGR problem? or idle air control? The check engine light came on about two weeks before it started running like this but never affected runnability until now. Any help would be very very much apprieciated!! My compliments on this website too! One of the best and well put together ive seen.