Knocking sound from front suspension drivers side (sound file attached)
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Knocking sound from front suspension drivers side (sound file attached)
Hello,
does somebody have an idea what the defective part could be? GS300 has run 90.000km, sound can be recognized by passing for example gullys or small bumps with speed of ~20km/h. Increasing speed let the sound disappaer. I have already replaced stabilizer bar bushes, link assy and lower ball joint assy.
Attached a linked sound file, maybe somebody is familiar with this issue.
http://www.ewetel.net/~frank.strehma...seite_vorn.mp3
Regards
does somebody have an idea what the defective part could be? GS300 has run 90.000km, sound can be recognized by passing for example gullys or small bumps with speed of ~20km/h. Increasing speed let the sound disappaer. I have already replaced stabilizer bar bushes, link assy and lower ball joint assy.
Attached a linked sound file, maybe somebody is familiar with this issue.
http://www.ewetel.net/~frank.strehma...seite_vorn.mp3
Regards
Last edited by francis123; 04-24-14 at 01:32 PM.
#2
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I have the exact same problem, its driving me crazy, someone said stabilizer links, some else said it might be a shield over your catz, I'm not sure what it is but its really annoying. hopefully someone has an answer.
#3
I really never had that.... That sounds soo weird, it's soo quiet in your car, and with that noise, it sounds like a mimicking ghost noise. LOL....
Have you tried the dealer?
Have you tried the dealer?
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Definetly it's not a "ghost noise", it's sounds if there is something loose in the suspension. Dealer checked, couldn't find anything. Proposed to replace one part after another, to find the root cause...very trustful....
#6
jack that side up and wobble ur wheel back and forth, see if there is movement.
EDIT: Might be your struts too. Did lexus offer to change the struts?
EDIT: Might be your struts too. Did lexus offer to change the struts?
Last edited by XxGoKoUxX; 04-25-14 at 04:05 AM.
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Struts means shock absorbers?
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Sounds like it could very be a shock or shock mount going bad... I had that in my 2005 LS430 right before I replaced most of the suspension. My sense of that noise was right around when I was at 105,000 miles... I also hear about to begin in my 08’ GS460 and it also has 111,000... No doubt Lexus makes the best reliable and dependable rear wheel drive known to mankind.
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#11
I couldn't open the sound file, but I had a loud knock on my car several months ago, I took it to a friend's shop and put it on the lift. Turns out it was a bad muffler mount which was allowing the muffler to hit the bottom of the vehicle. I replaced it and that solved the issue.
Might not be your problem, but thought I'd offer something different than what everyone else was suggesting.
Might not be your problem, but thought I'd offer something different than what everyone else was suggesting.
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I couldn't open the sound file, but I had a loud knock on my car several months ago, I took it to a friend's shop and put it on the lift. Turns out it was a bad muffler mount which was allowing the muffler to hit the bottom of the vehicle. I replaced it and that solved the issue.
Might not be your problem, but thought I'd offer something different than what everyone else was suggesting.
Might not be your problem, but thought I'd offer something different than what everyone else was suggesting.
On next weekend strut mounts + struts will be replaced, let's see!
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Left strut was leaking, but not really visible in assembled condition. The mounts still looked very fine, so no really need to change them, but as I had purchased them, I substituted them as well.
I was really surprised about the much better driving after the parts change. Either on very bad streets, suspension has improved this much!
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Still knocking sound in front suspension, I go crazy!
Struts and mounts were substituted --> sound has gone :-)))))))))))))))))))))
Left strut was leaking, but not really visible in assembled condition. The mounts still looked very fine, so no really need to change them, but as I had purchased them, I substituted them as well.
I was really surprised about the much better driving after the parts change. Either on very bad streets, suspension has improved this much!
Left strut was leaking, but not really visible in assembled condition. The mounts still looked very fine, so no really need to change them, but as I had purchased them, I substituted them as well.
I was really surprised about the much better driving after the parts change. Either on very bad streets, suspension has improved this much!
Since sound came back I've replaced:
- 3 times strut right side, 1 time left side
- strut mounts
- link assys
- stabilizer bar bushes
- upper control arms
- lower ball joints
Only lower control arm wasn't replaced, but all the bushes are looking very good and I can't imagine that those big bushes are worn out after 110.000km. Sound ist noticeable up to a speed of ~20km/h if small bumps are passed.
Any idea of other possible error sources? One friend mentioned, that as well steering rack could be cause the "knock knock" sound.
Thanks a lot!