:eyeroll: 92 mits 3000 gt sl sometimes runs good. somtimes not. like elc problem tac at 600 rpm cold or hot. rev to 4000 rpm kick in like all 6 are hiting new plugs wires when runs good, idle at 1200 rpm. like off and on. how do i read codes with no scanner. how do i fine list of codes. please

how do i read codes with no scanner.
This was all I could clean up and make sense out of your post. The answer is autozone. They check it for you for free.