When im at a stop it idles up and down fast, about every 1/2 of a second for a while, and sometimes it would steady it self out, and sometimes not. AND SOMETIMES IT JUST CUTS OFF AT A STOP. I had this problem for a while and then i went away after i changed my distributor, wires, & plugs about a year ago. I just changed my timing belt, water pump, ac compressor, & belts… and its back! I’m out of ideas, I dont know if compression has to do with it but my compression is (from 1 to 4) 135,190,200,200. Only one bad cylinder, o yea and its a 00 civic dx.