My daughter reports on her 2006 Taurus that sometimes when she turns into her parking space that it feels like the power steering is cutting in an out as she turns the wheel. She has heard a squeal only a couple times and there is no fluid leakage. Initially I thought perhaps the belt was slipping, but I would expect to hear a squeal every time it did this if it were belt related. It has never acted up for me when she visits. I checked the belt and it looked okay. I flushed the system with new fluid but she says it still does it intermittently. Does this sound like the pump just needs to be replaced? I think the car has around 105K miles on it.