Audi A6

Hi, I have an Audi 2000 A6, with 4.2 engine. The steering pump has a whine when you turn the wheels both ways. Also hard to turn when standing still. The reservoir is full but bubbles when the car is running. Have tried turning the wheels back and forth, no good. This started when I left the car parked over night with the tires turned all the way to the left. I'm thinking pump, but perhaps it's not.
September 28, 2007.

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