jarocki wrote:and why would that make a high pitch noise? like its happening when driving in a straight line? no steering.
your power steering pump is working if you move the steering wheel at all. so the tiny movements of the wheel as you're driving will mean it's permaently working. i'm not saying it is this, but it's perfectly likely.
i got this sorted a while ago sorry forgot to say it was the metal protection around the brake dics hitting against it. when ball joints were being changed it must have been pushed against the brakedisc. so when the car was moving it was making that noise.