Question about 1991 Lexus LS 400

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Diagram of how power steering fluid leaks onto alternator in 1991 ls400

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Power steering

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?

Posted on Jan 29, 2009

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SOURCE: 1991 ls400, after replacing power steering pump,

may need a code put in for the computer to work

Posted on Dec 13, 2009

  • 37 Answers

SOURCE: I have a 1991 ls400. The power steering is

Check out the 2 lines that run from your power steering pump. With the engine running try moving them, and look for fluid leaking around the end of the hoses, you will probally find one of them leaking at the fitting. Of course be careful with the engine running, do not have any rags or anything in your hands around a running engine.

Posted on Jan 12, 2010

ddywrbks
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SOURCE: leaking brake fluid at rear passenger '92

Hi,
Most likely a brake caliper or line. Lines are fairly cheap, calipers cost about $75 a piece if you get them discount online. Novice mechanics can do either or both replacements. DOnt buy parts from a dealer, they are 40% higher than retail. A brake shop will run you in the range of $150 to replace the caliper and pads one one axle, about $300 on both rear (replace both is recommended). Mike

Posted on Jun 14, 2011

xpackx981
  • 2 Answers

SOURCE: 1991 lexus ls400 power steeing slowly got hard to

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..

Posted on Jul 07, 2013

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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

1 Answer

1997 Lexus LS400 wiring problems when it's wet outside


Insure the drive belt is turning the alternator properly. When it is wet outside the belt will slip quite a bit more if it is not tensioned properly. Also ....the ground from the battery post to the engine block needs to be checked to insure a great connection. Any resistance in the ground cable OR the positive cable from the alternator to the positive post of the battery will cause your issue....dampness will make these issues worse.
Would check output of alternator when damp/wet outside...and find a tech that KNOWS how to perform a voltage drop test on the battery cables and the alternator output wire that goes back to the battery.

Hope this helps!

Scott, Porsche Master Tech. 35 years

Jan 12, 2014 | Cars & Trucks

1 Answer

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

2 Answers

THE BATTERY LIGHT CCAME ON AND IT WAS DIFFICULT TO STEER POWER STEERING FLUID IS THERE BELT CANE UNRAVELED NO HOSES APPEAR TO BE LEAKING OR BROKE. HOW DO I PUT THE BELT BACK ON


First check all pulleys for wobble or looseness. If all pulleys are OK, use the below diagram to put the belt on all pulleys except alternator. Put a wrench on tensioner pulley and pull down until the belt will slip onto the alternator pulley. Check that belt is still on all pulleys before starting. If belt comes off again, one of the components is failing (usually an idler, tensioner or water pump wobbling).


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Sep 03, 2010 | 2001 Ford Escort ZX2

1 Answer

I have a 1991 ls400. The power steering is atrocious. I continually have to add atf fluid or stop leak into the power steering chamber. I assume it's a leak--a very small one. Any ideas on what stop...


Check out the 2 lines that run from your power steering pump. With the engine running try moving them, and look for fluid leaking around the end of the hoses, you will probally find one of them leaking at the fitting. Of course be careful with the engine running, do not have any rags or anything in your hands around a running engine.

Jan 12, 2010 | 1991 Lexus LS 400

2 Answers

1991 lexus ls400 power steeing slowly got hard to


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

1 Answer

Fluid leaked on belt; car won't fully crank;how do i get to run?


check you crank sensor wiring. wires run from behind a plastic cover up and out towards the radiator. good luck

May 25, 2009 | 1991 Buick LeSabre

1 Answer

Power steering leak --a lot


Three areas of concern. A leaking steering rack: By looking under the car, look for the rods which tie the left and right wheels together in the center. By turning the steering wheel fully to the left or right, you can look behind the front wheels 1/2 way down and you will see the rod I am referring to. Following the rod to it source of attachment, it will have a rubber bellows type cover surrounding is as it gets near the center of the car. If the rubber is torn and has oily residue, that is where you are loosing your power steering fluid. It is a leaking power steering rack. A fairly expensive repair, best left to a professional. Buying a used one is a real crapshoot because they are very prone to failure as they get older.
2. The high pressure hoses will leak on these cars. It is difficult to see these without putting the car on a lift because the pump is on the firewall side of the engine. If you notice the fluid dripping near the pump, it is a higher probability than not that it is the high pressure hose than the pump. Also look at the return hose coming from the reservoir, Sometimes the clamps aren't that tight and it will cause a leak, but your description sounds like a leak under pressure.

Mar 22, 2009 | 1991 Nissan Maxima

3 Answers

Loud noise when turning wheel red fluid leakage behind driver side tire no loss of power steering and persistantly louder when first driven and then noise almost goes away once 92 lexus ls 400 145000...


that could be the rack and pinion leaking. as far as the noise goes, it is more than likely the same thing. have your local mechanic check it out because if its the power steering pump its cheaper to fix that than it will be to have the rack replaced.

Sep 22, 2008 | 2005 Lexus LS400

2 Answers

Power steering


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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