well.....its an old car.
i would guess the steering rack is worn out.
when the road is uneven,the pressure exerted by the road surface causes the rack to move.
movement is minimal but the effect is significant.
i am driving a waja but the problem is similar.
at first os suspect the lower arm and the steering rack bush mount is worn out but its not the problem.
i even remove the lower arm and brought it to spare part shop but the shop refuse to sell to me saying that nothinf is weong with mine.
how i know its the steering rack?
i jack the front until the wheel is off the ground,turn the steering wheel left and right.
i notice the same tok3 sound when i am going on uneven road.
i put my hand on the tie road and can feel a knocking feeling and the freeplay of the rack.
the tie rod itself is in good shape.