Hi guys I just picked up a 2004 mustang gt 5 speed last week. I've noticed that sometimes the power steering just does not work. For example, I was backing out of a tight space in a parking garage last night and it was just extremely difficult to move the wheel. But when I started it up this morning, it worked perfectly fine- I could move the wheel with the car standing still with minimal effort. The fluid is at the right level and it's not discolored at all. The pump does not make any strange noises. Also I know that the power steering and brakes are linked in these cars, but this has had no effect on my brakes. Any idea what might be wrong?