Question about 1993 Lexus Ls 400

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99 LS400 has a wining power steering pump?

The noise is most noticeable when it is started cold or after it has sat for a couple of hours. After driving for a short while the noise goes away. I replaced the pump, no help! ($500 mistake!) It is picking up air somewhere? No fluid leakage can be found? I replaced all of the factory hose clamps thinking that would help!

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Have you checked the belt? thats usually what causes this problem.

Posted on Nov 29, 2008

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