LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

wierd problems

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Old 11-21-09, 02:29 PM
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vaughn37
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Default wierd problems

Hi..all at once my battery light,add oil light,add coolant,rear light, brake light came on,
But everything seems ok..coolant level is good..oil level etc.
I have read it might be the wire's in the trunk hinge .


The weirdest thing is once this happened..the loud humming noise.which i thought was either from the power steering or alternator.has completely stopped .It feels good to not hear that hum, the hum gets louder when i would press the brake pedal to put it in gear..and until the car warmed up and the idle drops to normal.it is very loud......any ideas???
Old 11-21-09, 03:13 PM
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curepunx
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From what ive read on several posts [try search-feature!], it's more than likely your alternator. Get it tested promptly before doing anything repairs/replacement.

Goodluck
Old 11-21-09, 03:31 PM
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vaughn37
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hi thanks...i did do a search.. i found a few saying alternator and a few saying trunk wiring
if it is my alternator...it must mean it is on it's way out and not completely gone yet.because i have been driving it this way for 2 days...
Old 12-02-09, 03:52 AM
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vaughn37
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yes it was my alternator .....I bought this one off ebay http://cgi.ebay.com/ebaymotors/ws/eB...0396&viewitem= great deal.
the hum noise is gone. THANK GOD.
The original alternator was soaked in power steering fluid.....but I could not tell that the steering unit was leaking...maybe the lady I bought it from got it fixed. I put a shield between the power steering unit and the alternator to keep it from doing any damage.

So for anyone that read's this......if you have a humming noise. it might be your alternator and not your power steering pump
Old 12-02-09, 05:18 AM
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GABE_LS400
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i would say get a gun and shoot some holes in the hood, it makes the car way faster. And more guys will want you.
Old 02-21-11, 12:46 AM
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LunchBauss
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hey hows it going guys..well im having the same issue my battery,add oil,an add coolant lights are on...everything is good..i just changed the battery because it died on me..


any advice.can it be alternator??? i also have that power steering noise..not sure if it is power steering or alternator now???? any suggestions????


thanks !!
Old 02-21-11, 06:49 AM
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steve2006
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Hi,
A simple search would reveal that it is the O ring seal on the PS reservoir that causes the leak of fluid onto the alternator below.
So don't replace the alternator without replacing the o ring at the same time or you will be needing another alternator very soon.
Old 02-21-11, 08:05 PM
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willhickey
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ours was the altenator ,, did it twice then left my wife stranded
Old 02-21-11, 10:20 PM
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BunthaKev
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Originally Posted by steve2006
Hi,
A simple search would reveal that it is the O ring seal on the PS reservoir that causes the leak of fluid onto the alternator below.
So don't replace the alternator without replacing the o ring at the same time or you will be needing another alternator very soon.
Improper ventilation of the power steering unit. Lexls.com will show you a proper fix and many other things.
Old 02-21-11, 11:27 PM
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trukn1
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Power steering leak is the LEADING cause of pre-mature alternator death in our LS's. The warning lights that you all have had displayed is your first sign that it is pretty much dead and your car is running purely off of battery power alone. In most cases, you have about 30 minutes before the car completely dies. In the case of the humming,,,,low PS fluid level is NORMALLY the culprit; especially if it is leaking.
Old 02-24-11, 06:04 PM
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LunchBauss
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well it does leak wen i put more noise still continues..but about the warning lights they turned off...yesterday..an came on at night...then again turned off today...but i also get a wierd smell..?? smells like something burning but theirs no smoke...wat can it be..???catylitic?? i do have an exhaust leak...help plss!!
Old 02-24-11, 06:51 PM
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deanshark
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Originally Posted by LunchBauss
well it does leak wen i put more noise still continues..but about the warning lights they turned off...yesterday..an came on at night...then again turned off today...but i also get a wierd smell..?? smells like something burning but theirs no smoke...wat can it be..???catylitic?? i do have an exhaust leak...help plss!!
The smell could be PS fluid leaking onto the exhaust and burning quick enough so there's no smoke. The humming could be air in the PS pump seeing how it leaks.
Old 02-24-11, 08:55 PM
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willhickey
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my buddy had a 95 and about a month ago he drove to florida the light kept going on and off battery light and then the harness caught on fire( alternator) ...... 600 cha ching. im sure he learned a valuable lesson, dont ignore things that are obvious
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