How can I fix hydraulic (power steering) system?

2001 BMW 320I
77,778 MILES
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DAVAA
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After engine started I heard vibrant voice and feel hardly vibration when I turning the steering wheel on the corner turnover. Sometimes is normaly. I cheched hydraulic fluid it is normaly but not renewed.

Mar 1, 2012 at 7:10 PM
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FIXITMR
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so it's noisy when you hit the end of travel? this is fairly normal for power steering.
Mar 1, 2012 at 7:13 PM
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DAVAA
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Thanks for reply. Now noisy is hearing all the travel. Turning the steering wheel is too difficult(vibrate)on corner.

One man it is maybe power steering pump failure. This winter car has been outside (-20 - 29C). few day ago add one fluid. it was different from old one.

I want find problem exactle where power steering fittings, hoses, others. What should I do?
Mar 1, 2012 at 8:46 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,989 POSTS
if fluid got low lines can have air which is noisy and effects steering response. may take days for air to work completely out if pump stays full.
Mar 1, 2012 at 8:56 PM
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DAVAA
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How can I find exactly appropriate model of Power steering pump?
it is so many brand Luk,ZF ...
My car model BMW 320i manufactured 2001, months exactly don't know. B,2170cc. Steering right side. Imported from Japan VIN/serial:WBAAN160XONE15588

Mar 4, 2012 at 7:26 PM
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