I just bought a 2002 Accord LX from a friend of mine and a couple of days later I get this wierd problem with the idle. It doesn't happen all of the time, but at least once or twice daily. All of a sudden, the idle will go up and down like I'm tapping on the gas or something. Goes from about 900 to 2500rpm's. Sometimes it stops when I shut it off and restart it. Irritates the heck out me and I hope someone in this group know a fix for it. Thanks in advance for your help.