I am having a problem with my car surging at idle badly. The car runs fine besides when it idles but when it starts to idle it sounds like a damn muscle car with a huge cam in it. The rpm's just jump back and forth from 400 to 1000. I don't know what it wrong with it, but I am hoping someone can help me out. I already tried resetting the Ecu and it still surges like before. Thanks in advance for the help, Curt.