help! 'tock' noise when stopped while front wheels straight, once turning wheel!!??

[yoni]

so my title might now have made much sense, but here's the problem

when i stop the car, and the wheels are all aligned (front wheels straight), and i turn my wheel slightly left or right, while still on the brakes, and stopped, i hear, and feel on the steering wheel, a slight 'tocking' noise, and a small jump-jerky feeling on the wheel

what can this be? when i'm driving, it's all good... but once stopped, it makes that subtle noise, and jerky feeling..

any help?

tia

[kronus]

It probably happens when you're driving, you just can't hear it.

Check your P/S pump's belt, and inspect the steering rack for leaks.

[jlevie]

There are several possible causes including a problem in the steering column, a bad rack, bad tie rod end, binding upper strut bearings, or a problem with the PS pump. You can probably localize the source of the noise by touching the various parts of the steering and suspension while someone wiggles the steering wheel.