I HAVE A 97 CIVIC HX, ALL STOCK, ENGINE WISE. CAR ONLY IDLES WHEN AT A COMPLETE STOP. GOES PRETTY LOW THEN IDLES BACK UP, DONT KNOW HOW TO CHECK VACUM LINES, I HEARD IT MIGHT ALSO BE EGR VALVE, SO I CLEANED IT OUT REAL GOOD, NO CHANGE. THEN I FIGURED IT MIGHT BE THE SENSOR THAT CONTROLS THE IDLE WHAT DO YOU GUYS THING. IM STRESSIN AND IM EVEN THINKING ABOUT GOING TO HONDA BUT WOULD RATHER SAME SOME CASH IF EASY ENOUGH TODO MYSELF....HELP!!!