I'm puzzled and hope someone out there can help me. A loud clunking noise has suddenly developed when I reverse and lock the wheel over; it's ok when going straight. It happens from about half lock in each direction and makes the vehicle judder as if it the wheel has gone over something. There's no noise when going forward even at full lock.
I first thought about the front driveshaft cv joints, but having had problems with these in the past on other vehicles they normally just click or make a slight knocking, nothing as severe as this. I checked these out in any case and there doesn't appear to much if any play in them. Having read a previous thread about the clunking in the front propshaft CV I'm now wondering if it could be that, but why would it only happen in reverse when locking over? I will be very pleased for any help to get to the bottom of this.
I first thought about the front driveshaft cv joints, but having had problems with these in the past on other vehicles they normally just click or make a slight knocking, nothing as severe as this. I checked these out in any case and there doesn't appear to much if any play in them. Having read a previous thread about the clunking in the front propshaft CV I'm now wondering if it could be that, but why would it only happen in reverse when locking over? I will be very pleased for any help to get to the bottom of this.
Did the tippex test on the VCU, was able to turn it, just, with the aid of a long steel bar through the CV joint and a lot of brute force and ignorance - also goosed!! 
