I have a 2000 Outback, Automatic.
I have put an Oxygen sensor, knock sensor, catylitic converter, cleaned pcv valve and cleaned Idle air valve. When I am at a complete stop(say a redlight) with my foot on the brake, the car idles down causing it to vibrate a little. If I put the car in neutral or park the car idles perfect. Does anyone have any suggestions please. Your help is greatly appreciated.