87 prelude 2.0 si...when it gets warm and is idling, the pgmfi light will come on and the idle will increase 200 rpm. when the light goes off it idles back down to normal. the light usually stays on for like 30 secs or so. any ideas??

 

that's the same as the check enginel light.. check your LED's on the ecu there should be four with a number on each on the sight glass.