Over time, the bushings or ball joints on the wishbone wear out and can cause all sorts of problems. Usually a problematic wishbone assembly will produce a few symptoms that can alert the driver of a potential problem that should be serviced. Some symptoms include; steering wheel vibration, steering wandering (causing the steering to pull to the left or right, requiring a constant correction from the driver in order to steer the vehicle straight) and clunking noises. The wishbones on a vehicle are very important suspension components, if you suspect that your vehicle’s control arms may be defective or worn, have the vehicle’s suspension inspected by a professional technician.