1991 LS 400 Alternator
Thread Starter
Driver School Candidate
Joined: May 2006
Posts: 1
Likes: 0
From: ca`
1991 LS 400 Alternator
Hey, I'm a newbie to the lexus world and i need some help. I need a writeup on how to replace the alternator. Any help would be great, but if anyone has a writeup, it would be the best.
Thanks
Thanks
Pole Position
Joined: Dec 2004
Posts: 242
Likes: 0
i don't have the answer to your specific question, but if the alternator is gone, look up prior posts on the power steering pump. this could easily be the cause of the alternator going. there shouldn't be more than a thousand or so prior posts on this topic. this is one of the major design flaws in the ls. it pays to know about it.
Driver
Joined: Nov 2003
Posts: 137
Likes: 3
From: California
Think about rebuilding your alternator ...rather than buying a remanufactured or new one.....they are quite expensive......
Any good auto electric shop should be able to rebuild your existing alternator...
Any good auto electric shop should be able to rebuild your existing alternator...
Driver School Candidate
Joined: Dec 2014
Posts: 1
Likes: 0
From: Illinois
rebuild instructions
I bought a LS 400 about a year ago, and of course my power steering has leaked all over it. I would greatly appreciate instructions on how to rebuild the alternator and maybe even how to rebuild the power steering pump.
Just search in this forum for leaking power steering pump.
Regarding the PS pump, it seems everyone eventually has problems with the idle-up valve. Many have problems with the o-ring between the reservoir and pump leaking. Some actually need a new pump. It sounds like many people see a leak there and just replace the pump. This does take care of all 3 possibile problems, but may not be necessary. But yes, you do want to get the PS leak taken care of if you want to preserve your new alternator.
If you're able to rebuild the pump yourself, you can save some $$ that way. I did it on mine and it was trickier than I expected. But in the end it was just that the o-rings and seals had cooked over time and were too hard to seal properly.
Trending Topics
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
Top 10 Most Confusing Things Lexus Has Ever Done!
Joe Kucinski
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles
Michael S. Palmer
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4
Joe Kucinski
8 Weirdest Things Lexus Has Ever Built
Verdad Gallardo
10 Lexus Designs That Have Aged Like Fine Wine
Verdad Gallardo
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!
Michael S. Palmer
10 Best Lexus Models No One Remembers
Joe Kucinski
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing
Michael S. Palmer
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
9036317017 BEARING, RADIAL BALL 1 $12.02
0444630173 Steering - P/s pump & hoses - Seal kit Seal kit, ls400 - power 1990 - 1992 1 $27.04
Thread
Thread Starter
Forum
Replies
Last Post
