Question about 1990 Lexus LS 400

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Power steering draining out

Power steering fluid gets on draining out of my 1990 400 ls lexus, what could be the problem?

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  • stephen gosser May 11, 2010

    whare is it draining from?

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  • Lexus Master
  • 358 Answers

They are bad about pumps leaking into alternatorand shorting out .the high pressure hose from pump to rack and pinion are also bad about leaking. the racks will leak around 100k.

Posted on May 20, 2009

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1 Answer

How to tell if power steering oil is leaking on alternator 1991 ls400?


You can get a dye to put in the power steering reservoir it makes the fluid glow

May 17, 2014 | 1991 Lexus LS 400

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Want to know if my alternator is under my power stering pump on 1993 lexus ls 400


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You may have to remove the power steering pump in order to get your hands down in the passenger side of the engine to remove it.
when reinstalling pump be careful not to let any power steering fluid drip down into alternator. That could cause a premature failure of the alternator.

Jan 27, 2014 | 1993 Lexus Ls 400

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Does the 1994 LS 400 use something other than power steering oil?


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Jul 29, 2011 | 1994 Lexus LS 400

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Where is the alternator located on a 1991 ls 400


The main purpose on an alternator is to recharge current back to the battery. One of the most common problems with the Lexus LS400 and SC400 is that power steering pump seal leak. Right below the power steering pump is the alternator. The power steering fluid will drip down and cause many electrical problems for the alternator. Therefore, its very common to have the alternator go bad along with the power steering pump, just be sure to check.awcforever.gif

Mar 07, 2011 | 1991 Lexus LS 400

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I have a 1995 lexus Ls400.is there a way to tighten the power steering pulley without removing it.


  • xus LS 400 and locate the power steering pump pulley, fluid reservoir and pump on the upper front driver side of the engine.
  • 2 Connect the pulley remove tool to the front of the power steering pulley. Brace the arms on the pulley tool on the **** of the pulley. Connect the metal key in the middle of the pulley tool to the nut in the middle of the pulley. Connect the power drill to the pulley tool and pull the trigger to remove the pulley securing nut. Remove the drive belt and the pulley.
  • 3 Position the drain container under the power steering pump. Remove the drain plug from the bottom of the pump using the metric ratchet set. Let the fluid drain from the pump into the drain container. Replace the drain plug to the bottom of the power steering pump.
  • 4 Remove the securing bolts from the right and left side of the reservoir and the pump using the metric ratchet set. Pull the pump upward and disconnect the hose from the bottom of the pump using the wrench. Pull the pump from the engine compartment.
  • 5 Lower the new power steering pump into the engine compartment. Reconnect the hose to the bottom of the power steering pump. Position the new power steering pump onto the engine. Replace the securing bolts the right and left side of the pump and reservoir. Tighten the bolts using the metric ratchet set.
  • 6 Replace the power steering pump pulley the opposite way that you removed it. Reconnect the drive belt.
  • Fill the power steering pump reservoir with fresh power steering fluid. Start the engine and rotate the steering wheel to circulate the new power steering fluid. I no i gave you directions on how to remove the whole power steering pump question is the pully loose or are you wanting to just change a belt good luck happy holidays


  • Dec 15, 2010 | Lexus LS 400 Cars & Trucks

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    As mentioned check ps fluid. If it wines when turning and still no power then the pump is internally bad.. If the fluid is dissapearing fast then its a hose or most likely a leaking rack& pinion assembly..

    Nov 11, 2009 | 1991 Lexus LS 400

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    Jul 07, 2009 | 1992 Lexus Ls 400

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    it's fine to add any fluid to this model , its versatile, you can even use milk or tomato juice.

    you're welcome

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    The leak could be in the steering rack.

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    There is a loud squeak on the front of my 1991 ls 400. The squeak is near the alternator. Any one no what it is?

    Aug 15, 2008 | 1991 Lexus LS 400

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