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

Vibration on Breaking

Thread Tools
 
Search this Thread
 
Old 09-05-10, 12:24 AM
  #1  
WGM
Driver School Candidate
Thread Starter
 
WGM's Avatar
 
Join Date: Sep 2010
Location: Arizona
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Default Vibration on Breaking

My LS400 has been vibrating when the brakes are applied even though I had the brakes done (not by dealer) and front end work recently done, bushings, etc. But I am still have the problem. I put on Michelin tires for the first time and had the tires rotated and balance again. Still doing it. Any Idea of what the problem could be, i.e. why I still have very noticeable vibration in the steering wheel upon breaking. Do you think not have Lexus do the breaks is the were I went wrong or is there another potential problem that maybe someone out there also experience and identified. Thanks for your consideration and reply.
Old 09-05-10, 12:30 AM
  #2  
hobojoe
Lead Lap
 
hobojoe's Avatar
 
Join Date: Apr 2007
Location: CO
Posts: 663
Likes: 0
Received 1 Like on 1 Post
Default

Wheel bearings, bushings going bad in rear suspension components.....just a few starter ideas but search! And welcome to CL
Old 09-05-10, 12:59 AM
  #3  
black_LS
Advanced
 
black_LS's Avatar
 
Join Date: Jul 2007
Location: Toronto
Posts: 515
Likes: 0
Received 19 Likes on 2 Posts
Default

Were the rotors machined or replaced?
Old 09-05-10, 06:04 AM
  #4  
billydpowe
Lexus Champion
iTrader: (1)
 
billydpowe's Avatar
 
Join Date: Mar 2009
Location: texas
Posts: 3,225
Received 172 Likes on 130 Posts
Default

My older 99 started doing that, I replaced mine (front rotors and ceramic pads) on my 99LS earlier this year. Got mine from brake overstock (TRW brand) for $90 total (rotors & pads). smooth as satin...

You can call them at (888) 441-8808 or e-mail at: brakeoverstock@gmail.com
hay save some $$$$

Last edited by billydpowe; 09-05-10 at 06:12 AM.
Old 09-05-10, 07:44 AM
  #5  
Mega
Driver
 
Mega's Avatar
 
Join Date: Jul 2010
Location: illinois
Posts: 101
Likes: 0
Received 0 Likes on 0 Posts
Default

What brake rotors did you use? China made ebay slotted or drilled rotors warp very fast. The owner of my ls before me installed ebay drilled rotors 2 days before i bought the car. They warped within 2 weeks.
Old 09-05-10, 12:21 PM
  #6  
billydpowe
Lexus Champion
iTrader: (1)
 
billydpowe's Avatar
 
Join Date: Mar 2009
Location: texas
Posts: 3,225
Received 172 Likes on 130 Posts
Default

Originally Posted by Mega
What brake rotors did you use? China made ebay slotted or drilled rotors warp very fast. The owner of my ls before me installed ebay drilled rotors 2 days before i bought the car. They warped within 2 weeks.
I used the TRW Rotors and ceramic Pads.
TRW has been making rotors/brake equipment and pads longer than we have had Toyota's in America CHECK THEM OUT http://www.trwauto.com/

Last edited by billydpowe; 09-05-10 at 02:46 PM.
Old 09-05-10, 12:55 PM
  #7  
RA40
Super Moderator

iTrader: (6)
 
RA40's Avatar
 
Join Date: May 2003
Location: California
Posts: 20,850
Received 463 Likes on 361 Posts
Default

First terminology:
Brake - is a device which inhibits motion
Breaking - to separate into parts with suddenness or violence


The most common cause is a warped rotor. If the rotor was not turned/machined during the brake service, this is the likely suspect. Which bushings were replaced in the front end?
Old 09-05-10, 02:31 PM
  #8  
KMinAF
Rookie
 
KMinAF's Avatar
 
Join Date: Feb 2009
Location: Utah
Posts: 63
Received 3 Likes on 3 Posts
Default Second, what really is a "warped" rotor

Check out the following website for what is actually causing "warped" rotor vibration:
http://www.stoptech.com/tech_info/wp...rakedisk.shtml

Ceramic pads and good quality rotors should fix the problem
Old 09-05-10, 02:44 PM
  #9  
qewani1
Lead Lap
 
qewani1's Avatar
 
Join Date: Jun 2008
Location: indianapolis
Posts: 421
Likes: 0
Received 0 Likes on 0 Posts
Default

billy,
$90 total (rotors & pads) per each wheel or do you mean for all 4 wheels?
Old 09-05-10, 05:44 PM
  #10  
billydpowe
Lexus Champion
iTrader: (1)
 
billydpowe's Avatar
 
Join Date: Mar 2009
Location: texas
Posts: 3,225
Received 172 Likes on 130 Posts
Default

Originally Posted by qewani1
billy,
$90 total (rotors & pads) per each wheel or do you mean for all 4 wheels?
sorry, the two front wheels, two rotors and one ceramic pad set for front wheels.

I tried your link http://celsiorup.com/ but I cant read it.

Last edited by billydpowe; 09-06-10 at 05:29 AM.
Old 09-05-10, 09:23 PM
  #11  
azryno
Driver School Candidate
 
azryno's Avatar
 
Join Date: Jun 2010
Location: AZ
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
Default

car parts wholesale has Brembo rotors for the fronts on sale for 75.00 for a pair. i just ordered some for my 1990 that is having the same problem.
Old 09-06-10, 01:11 PM
  #12  
qewani1
Lead Lap
 
qewani1's Avatar
 
Join Date: Jun 2008
Location: indianapolis
Posts: 421
Likes: 0
Received 0 Likes on 0 Posts
Default

billydpowe, site is in japanese, you may need to install the languages in your PC.
Which operating system do you have? windows XP?
Which internet browser do you use? Internet explorer or Firefox?
You may try this link
http://translate.google.ae/translate...%3Den%26sa%3DG

Last edited by qewani1; 09-06-10 at 01:16 PM.
Old 09-07-10, 02:21 PM
  #13  
WGM
Driver School Candidate
Thread Starter
 
WGM's Avatar
 
Join Date: Sep 2010
Location: Arizona
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Default

Yes the rotors where replace and the front bushings. Thanks for your reply.


Originally Posted by black_LS
Were the rotors machined or replaced?
Old 09-07-10, 02:22 PM
  #14  
WGM
Driver School Candidate
Thread Starter
 
WGM's Avatar
 
Join Date: Sep 2010
Location: Arizona
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks, taking to dealer tomorrow, I ask the questions. I appreciate the advice!


Originally Posted by hobojoe
Wheel bearings, bushings going bad in rear suspension components.....just a few starter ideas but search! And welcome to CL
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RANDY P
Suspension and Brakes
6
02-22-10 08:41 PM
gymrat
ES - 1st to 4th Gen (1990-2006)
11
11-19-08 05:44 AM
acenase
Suspension and Brakes
6
11-20-07 11:32 AM
FinnLS
LS - 1st and 2nd Gen (1990-2000)
19
08-22-07 10:06 AM
jtgs400
Suspension and Brakes
8
03-17-05 04:09 PM



Quick Reply: Vibration on Breaking



All times are GMT -7. The time now is 03:57 PM.