Now my car runs like new.
I have a 2002 Honda Odyssey. The engine was surging in idle anywhere from 800 rpm to 1300 rpm. I went to the auto parts store. Bought Lucas fuel system cleaner. Stopped at the gas station with a 1/4 tank. Put the Lucas in. Filled the tank. Now my car runs like new. Smooth, normal idle. It was that easy!