Originally Posted by sonoronos
The only thing that makes sense to me is that the power steering pump is actuating the steering system relative to some steering preload placed on the steering wheel by the driver. If you hold the steering wheel, do you feel the steering wheel jerked out of your hands?
Let me try my best to describe it. Right before the car comes to a complete stop on an uneven road, the steering wheel will start to turn all by itself either left or right direction. The steering wheel would turn maybe a qurter turn or sometimes even more. It is a smooth action, just like when you drive a car up onto a curbside and the steering would turn automatically. BUT in my case, I'm not driving on the curbside, just an slightly uneven road, which i never experience that in other cars (at least not pulled so seriously). Of course I can hold the steering wheel and keep the car straight, but I can feel a force pulling the wheel to one side. About the same force that we turn our steering wheel to make a turn, but in this case I'm keeping the wheel straight.