I think I have the same problem, ive been bust spending loads of money this week and last trying to sort it without any luck

it started off as a "ch ch ch" more so turning right than left and now its very loud especially after ive been driving for a while. My dad told me I needed new disks, so i got new ones, but it still did it loud as ever.

I took it to Ford and they told me my steering rack was knackered and to do it would be a big job etc, but I thought yeah theres no way im neglecting my baby, my babes gets what she wants LOL, so it was away for about 4 days having a new rack put on and when I got it back? Still the "chh chh chh" Grrrrrr!!

Then my dad told me my brakes needed stripped, so we spent a whole day doing that, and the noise is still bloody there. Nobody knows what it could be!