SC400 P/S Buzz question - Club Lexus Forums

Go Back   Club Lexus Forums > Lexus Model Forums > SC Models > SC- 1st Gen (1992-2000) > Performance & Maintenance
Log In 

SC400 P/S Buzz question

Thread Tools Search this Thread
Old 07-26-14, 08:53 PM   #1
Pole Position
Trader Score: (1)
Join Date: Sep 2007
Location: wa
Posts: 300
Default SC400 P/S Buzz question

So lately my P/S has been making alot of buzzing noise when I turn the wheel. Fluid level is good and was changed about 20k ago. I have a 94 sc400. Does it sound like my pump is going out or my p/s rack?
Farino81 is offline   Reply With Quote
Old 07-27-14, 09:30 AM   #2
In Recovery Mode
Trader Score: (11)
SC400slide's Avatar
Join Date: Apr 2012
Location: NM/AZ
Posts: 3,558
Jonathan Hoppman SC400slide

If fluid level is going down and there is white smoke coming from the exhaust, then you have a failed vacuum valve, the PS pump also will do this when low on fluid, but if level checks out good then the PS pump could be worn out.
1992 Lexus SC400 158k 1993 Lexus SC400 318k 2004 Lexus SC430 85k 1999 Lexus GS300 215k 11 Suburban, 01 Sequoia, 00 Passport, 99 Miata
Lebo Boh tak miloval svet...
SC400slide is offline   Reply With Quote
Old 07-28-14, 09:09 AM   #3
Lexus Champion
Trader Score: (6)
Kris9884's Avatar
Join Date: Jun 2012
Location: MO
Posts: 1,605

Yeah if the fluid is not depleting then its a pump on it's way out. Mine's been doing the same thing for about 2 months and recently getting worse and harder to hold the wheel while turning. It's last leg..

'92 RJP SC300 - NA-T - SOLD
'97 CGP SC400 - 1.5JZ VVTi - under construction
CyclonedGSX on SupraForums
Kris9884 is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
93 SC400 TRAC buzzing pishta Performance & Maintenance 2 01-31-16 05:52 PM
sc p/s rack kolessc400 SC- 1st Gen (1992-2000) 3 09-25-15 06:22 PM
Removing alternator, move power steering pump or remove p.s. pulley? bogeyman GS - 2nd Gen (1998-2005) 11 06-23-14 04:40 PM
SC400 power steering vacuum source 1UZFE_SC95 SC- 1st Gen (1992-2000) 8 08-29-10 11:37 PM
1994 SC400 power steering pump replacement gone bad TGRich Performance & Maintenance 8 11-14-03 10:42 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 06:15 AM.

Copyright © 2000-2015 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS