Yo guys,Need help here.. under hard cornering (may be extreme at times cause traffic light blinkin) usually at lefthand 90 degrees turn and on rough road surfaces... an odd noise will be emitted/heard... somewhat like a low groan friction... Checked ball joints, tie rods etc. no exceptions noted... changed P/S pump and repaired leakage of steering rack... what else... kindly advise... sound is coming from driver's side...