Yes i have 280zx, I have unfortunately been using the wrong name for it then, it is the kind of large part before the throttle body and after the air filter. It has the flap in it that opens as air is drawn into the engine. hopefully you know what i am talking about. My car idles high sometimes, randomly at about 1000 rpms when it usually idles at about 700 rpms i have check everything and i am out of things to check so i wanted to clean this part to see if it would solve my problem. I would really appreciate any suggestions, thanks.