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

wierd jerking

Thread Tools
 
Search this Thread
 
Old 01-21-12, 05:09 PM
  #1  
Budul
Driver School Candidate
Thread Starter
 
Budul's Avatar
 
Join Date: Oct 2011
Location: NY
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default wierd jerking

hey guys i got a lil problem with my 95 LS 400 ...car jerks when i slowly let of the gas ...its mostly around 40-55 under and above i can't really feel it ...i can't figure wtf is it ...people that i asked told me that i could be injectors, spark plugs or transmission synchros ...any ideas ? [ i adjusted the transmission throttle cable but there still is *****load of space between the stopper and end of cable and i cant move it any further ]
Old 01-21-12, 06:01 PM
  #2  
PureDrifter
BahHumBug

iTrader: (10)
 
PureDrifter's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 23,918
Received 94 Likes on 86 Posts
Default

trans mount is first place to look.
Old 01-21-12, 06:13 PM
  #3  
Budul
Driver School Candidate
Thread Starter
 
Budul's Avatar
 
Join Date: Oct 2011
Location: NY
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

checked looks ok not fallin apart , altho car moves a lot when shifting from N to R and D
Old 01-22-12, 12:31 AM
  #4  
yaQuzza
Driver School Candidate
iTrader: (5)
 
yaQuzza's Avatar
 
Join Date: Feb 2010
Location: NV
Posts: 44
Likes: 0
Received 0 Likes on 0 Posts
Default

Wow that's sucks.
Old 01-22-12, 07:34 AM
  #5  
mikes7ke
Pole Position
iTrader: (1)
 
mikes7ke's Avatar
 
Join Date: Feb 2011
Location: PA
Posts: 331
Likes: 0
Received 0 Likes on 0 Posts
Default

If you can, compare your transmission mount to a new one. I've seen quite a few threads where people thought the mount looked just fine until comparing it to a new piece.
Old 01-22-12, 08:22 AM
  #6  
etex
Driver
 
etex's Avatar
 
Join Date: Apr 2007
Location: Texas
Posts: 180
Likes: 0
Received 1 Like on 1 Post
Default

+1 for transmission mount.
Old 01-22-12, 09:07 AM
  #7  
Budul
Driver School Candidate
Thread Starter
 
Budul's Avatar
 
Join Date: Oct 2011
Location: NY
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

Thx guys ...just ordered new one ... $40 is worth a try
Old 01-25-12, 02:26 PM
  #8  
Budul
Driver School Candidate
Thread Starter
 
Budul's Avatar
 
Join Date: Oct 2011
Location: NY
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

ight ...so i got new mount in not much changed ...it helped a little but not much ...old one was dead ...top plate separated from the rubber holding it
Old 01-25-12, 03:58 PM
  #9  
billydpowe
Lexus Champion
iTrader: (1)
 
billydpowe's Avatar
 
Join Date: Mar 2009
Location: texas
Posts: 3,225
Received 172 Likes on 130 Posts
Default

engine mounts are next for you,
and also under the car is a crossmember in front of the tranny, the only one there, make SURE the mounting bolts, to frame are tight... I am 77 and dont remember all of it, but it fixed one guys problem, plus it dont cost anything... keep us posted...
PD probably remembers it..
Old 01-25-12, 07:21 PM
  #10  
Budul
Driver School Candidate
Thread Starter
 
Budul's Avatar
 
Join Date: Oct 2011
Location: NY
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

ok thanks ill take a look at it + picture to show you the mount

Last edited by PureDrifter; 01-25-12 at 09:14 PM. Reason: fixed image link
Old 01-25-12, 09:15 PM
  #11  
PureDrifter
BahHumBug

iTrader: (10)
 
PureDrifter's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 23,918
Received 94 Likes on 86 Posts
Default

the crossmember is supposed to be tightened every few years but that at most usually causes a clunk that can be confused with the strut rod bushings (though isn't specific to bumps/one side.)

not known to cause thumping/rhythmic issues.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Twista4004
LS - 1st and 2nd Gen (1990-2000)
9
08-25-14 02:00 PM
2jzgttegs
GS - 2nd Gen (1998-2005)
24
02-18-13 06:36 AM
cartmill
Performance & Maintenance
10
04-01-12 02:00 PM
djpolak
GS - 2nd Gen (1998-2005)
4
05-08-09 09:24 PM



Quick Reply: wierd jerking



All times are GMT -7. The time now is 02:30 AM.