Hello i have a D16z6 motor in my civic and the idle on the motor revs up and down by itself. It revs from 800 rpm to 1800-1500 RPM over and over. I think its the throttle body. I tryed cleaning it from inside but nothing. Im also thinking the Intake Manifold is dirt from inside also. Does anybody have an Idea what the problem could be. Thanks for any efford.