Does your do it all the time, or only when moving? I can't help diagnose but am just working out if it's the same issue as mine. Mine does it only at slow speed and throughout the whole movement of steering travel. It does not do it if I 'dry steer' whilst stationary or once I'm moving above around 10-15 mph. I'm concerned it's the steering rack as I can't afford to replace that and am hoping it's not. I brought this car as I thought it was a good one, only 27k miles, never failed an MOT, good service history, pristine on the outside and inside etc but it's been a nightmare so far and it's really starting to cause me stress and worry! Went to get a new tyre and found one of the front wheels had been welded, went to change the rear discs and found whoever has previously owned it has totally rounded off the hangar mounting bolts and now this bloody click!