The power steering pump will cost between $175 and $350 depending on new or rebuilt and will take approx .9 hour to replace. The high pressure hose takes about .8 hours to replace and cost about $110 to $130. add $6 to $8 for fluid.
I driving my brother's 1997 Lexus LS 400 with over 229,000 miles on it. I have had the car since January 15, 2015. I have taken it to get oil & gotten new back brakes on the car. I had to take the car to Speedy Oil Change 3 times to put steering power oil in the car because of a winning rubbing noise. The service guy had me turn the wheel all the way to the left & then all the way to the right after he put the oil in. Sounds like there might be a leak in the steering hose pump need to get it replaced. I went to a garage and the Asian guy gave me a estimate of $765.00???