Hello and greetings to all
I have just noticed a random knock on front end on 2002 430 sc when going 5 to 10 mph and turning steering wheel to left or right...sounds like metal to metal and shifting or movement knock ... turning left, sound on passenger side; turning right, sound on drivers side..brake system checked out ok; had struts, plates and insulators changed; checks were made on torques to all front suspension bolts and everything is tight and no movements in bushings and etc..
totally baffled and really an annoying sound......ball joints are tight and no movement.anyone have the solution that's been down this frustrating road......thanks!!!!!!

 

It could be your castor arm or steering rack.

I really think its your steering rack which is loose. Have you changed the bushings on that? because if you think about it, the back of the steering rack (metal) touches the mounting plate (metal).. Loose bushing causing steering rack to shift which we have all dealt with.

There are a few forums on here on the steering rack bushings and how big of a difference they make if you get polyurethane, if you havnt changed those, they are a must!

 

check your shock strut mounts

 

My current 02 does this and my last SC (04) also did this!

Both are low mileage.