YOUR POWER STEERING PUMP MAY HAVE LOST IT,S ABILITY TO REGULATE IT'S PRESSURE OUTPUT .
THIS MEANS THAT AT ALL SPEEDS IT WILL FEEL LIGHT.THE RACK WILL BE GETTING TO MUCH PRESSURE.
IF YOU DO NOT HAVE POWER STEERING TAKE YOU CAR TO A TYRE SHOP AND ASK TO HAVE THE TRACKING RE-SET
RICHARD BROWN, December 2003