Can anyone tell me where I might find the idle control valve? I have an E220 which isn't sold in the States, but I'm hoping this part is located in generally the same area in most engines.

I believe this part can be cleaned out which I am hoping will solve my problem. My car 's idle speed fluctuates up and down for a few seconds once the car pulls to a halt. The car even moves unless you press the brake pedal hard. After a few seconds, it idles perfectly. Other than that it starts easily hot or cold and idles nicely unless coming to a halt.

I have already replaced the OVP.

Any help would be very much appreciated