It's an Mk1 Mondeo with a strange problem. When driving straight, the steering wheel is off-center. Then, when I brake, the wheel comes back to center and stays there even after releasing the brake, and the car continues to go straight. Very soon (or immediately if I accelerate) the steering wheel goes off again. If I hold the steering wheel loosely during this brake-accelerate action and allow it to go off and back to center, there is no pull to either side. On the other hand, if I hold the wheel firmly, the car pulls to one side on braking and to the other side when I release the brake and accelerate - I have to "readjust" the wheel on braking and accelerating. There is no free play in the steering wheel.
When driving, it feels as if one of the car wheels literally comes back to normal position when braking and then, soon after the brake is released, abruptly strays away, resulting in a need to compensate this with the steering wheel.
Any ideas?
Thanks