1999 LS400 Upper Loud Clunk
#1
1999 LS400 Upper Loud Clunk
this sounds like it is in the dash (it is that loud) you hear it when the left front wheel hits a "pothole"
I am thinking it is the front coil spring BUMPER, part number 4833150060.
In the photo below it is 48331.
MY QUESTION IS has anyone had to replace this item on your LS?
Sewell has 5 of them in stock, so it must wear out.
I am thinking it is the front coil spring BUMPER, part number 4833150060.
In the photo below it is 48331.
MY QUESTION IS has anyone had to replace this item on your LS?
Sewell has 5 of them in stock, so it must wear out.
#2
Lexus Champion
I'm thinking it is an upper control arm - part number 48630-59015 - check the ball joint in the center of this part
otherwise, I vote for the shock/strut itself p/n 48510-59106
Sewell has 5 of them in stock, so it must wear out.
that could be their original stock and none have ever sold!
I would call and ask which front uspension parts sell the most
otherwise, I vote for the shock/strut itself p/n 48510-59106
Sewell has 5 of them in stock, so it must wear out.
I would call and ask which front uspension parts sell the most
#3
Lexus Test Driver
iTrader: (1)
No real comment on your diagnosis.
But to answer your question, I did replace these on my '91. I did all 4 corners with KYB struts and strut mounts and Genuine Lexus on all other parts. On at least one of my struts, the bellows thing was torn away enough that I could inspect the bumper with the strut still on the car (jacked up, wheel off). It is a very tough looking plastic piece (not rubber), and I could see that it was intact but kind of chewed up. So I think I replaced all 4.
For the overall job, I know I replaced a lot of parts that were original and still very good at 170k miles (e.g., the strut mounts seemed just fine but I had the replacements so I just put them in - not worth it to return).
My thinking on these bumpers is that they are not supposed to ever be touched. They are a last-ditch buffer in case the strut has failed or you're landing big jumps (that was a joke). In normal driving, potholes, etc., with a functional strut, I don't think the bumper should get hit. So if your bumper is chewed up, broken, or gone, then your strut is probably bad too.
You can try to inspect it without removing the strut, but may not be able to see in there if the bellows is fully intact. The bumper is a dark orange plastic thing, as I recall.
But to answer your question, I did replace these on my '91. I did all 4 corners with KYB struts and strut mounts and Genuine Lexus on all other parts. On at least one of my struts, the bellows thing was torn away enough that I could inspect the bumper with the strut still on the car (jacked up, wheel off). It is a very tough looking plastic piece (not rubber), and I could see that it was intact but kind of chewed up. So I think I replaced all 4.
For the overall job, I know I replaced a lot of parts that were original and still very good at 170k miles (e.g., the strut mounts seemed just fine but I had the replacements so I just put them in - not worth it to return).
My thinking on these bumpers is that they are not supposed to ever be touched. They are a last-ditch buffer in case the strut has failed or you're landing big jumps (that was a joke). In normal driving, potholes, etc., with a functional strut, I don't think the bumper should get hit. So if your bumper is chewed up, broken, or gone, then your strut is probably bad too.
You can try to inspect it without removing the strut, but may not be able to see in there if the bellows is fully intact. The bumper is a dark orange plastic thing, as I recall.
#5
Did you find out what was causing the noise in this situation?
#6
When you press down on the front of the car does it bounce more than 1 1/2 times? If so, thinking struts. Is there abnormal tire wear? A bad strut can cause bouncing tire wear faster than the opposite tire. Clunking on speed bumps or the like leads to ball joints. Jack the car up. Grab the tire at 12 and 6 o'clock can you shake it? What about at 9 and 3 o'clock? Struts are expensive and you have to do them both at the same time plus an alignment. You are looking at $600+ if you need struts. Ball joints are most likely to last thing to go. I would suspect, sway bar bushings, sway bar support bars, tie rod ins and out, struts, and then ball joints lastly. Also, not sure but there might be grease fittings in the suspension. You might just need sway bar bushings and a suspension greased.
#7
When you press down on the front of the car does it bounce more than 1 1/2 times? If so, thinking struts. Is there abnormal tire wear? A bad strut can cause bouncing tire wear faster than the opposite tire. Clunking on speed bumps or the like leads to ball joints. Jack the car up. Grab the tire at 12 and 6 o'clock can you shake it? What about at 9 and 3 o'clock? Struts are expensive and you have to do them both at the same time plus an alignment. You are looking at $600+ if you need struts. Ball joints are most likely to last thing to go. I would suspect, sway bar bushings, sway bar support bars, tie rod ins and out, struts, and then ball joints lastly. Also, not sure but there might be grease fittings in the suspension. You might just need sway bar bushings and a suspension greased.
Last edited by WaveRunner; 07-09-18 at 05:44 PM.
Trending Topics
#8
Noises with turning I would be think steering rack, too. I saw a write up on how to flush clogged screens in the rack and pinion selanoid that didn't look too difficult. But I would check to make sure all the plastic under panels are secure and tight first ... they can mimic suspension noise. Also, rocks can get up into panels and make noise. Drive on gravel roads or driveways?
#10
Noises with turning I would be think steering rack, too. I saw a write up on how to flush clogged screens in the rack and pinion selanoid that didn't look too difficult. But I would check to make sure all the plastic under panels are secure and tight first ... they can mimic suspension noise. Also, rocks can get up into panels and make noise. Drive on gravel roads or driveways?
Thread
Thread Starter
Forum
Replies
Last Post
Max Power
LS - 1st and 2nd Gen (1990-2000)
3
09-22-10 05:36 AM