i have a 1990 crx dx with a zc in it, when i first got it running the car revved up extremely fast but it was throwing check engine lights, after i got the check engine lights to go away it didnt rev fast anymore, and when you mash the throttle at idle the engine bogs down about 300 rpms then revs up...does anyone know how to fix this!? i tried cleaning the throttle body..didnt work