GS - 4th Gen (2013-2020) Discussion about the 2013 and up GS models

Suspension Noises on Bumps

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Old 04-30-22, 01:22 PM
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jprebb
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Default Suspension Noises on Bumps

2013 AWD and I've been hearing noises when I hit a bumps or rough pavement and sounds like something is loose in the front suspension. I was thinking ball joints but when I inspected the ball joints they look good - the boot is still intact and no leakage. But what I did notice was the bushing in the lower control arm where the strut bracket attaches looked like it was worn pretty good. Does anyone know if I can order that separately or is the only way to get is with a new lower control arm.

Thanks!

JP

Old 04-30-22, 07:12 PM
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Barc0de
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I have the same noises. I'm interested in what people have to say. Are you positive that bushing is the issue?
Old 04-30-22, 07:46 PM
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Lwerewolf
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You'll have to replace the whole control arm to get those bushings new.

I'd swap them for polyurethane if they were _bad_.

Anyways, could be a ton of things. In my case (3rd gen gs450h, front is almost the same), after inspecting everything, I just swapped the front shock absorbers since they were probably the original ones on the car - all I can say is, take off the strut tower covers and check if the shocks have blown at the top there (should be oily as all hell).
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Old 04-30-22, 08:38 PM
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peteharvey
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Rarely bushing failure.
Check your front shock absorbers first.
Lexus 4GS have firm shock absorbers, esp 2013-15.
The firmer the shock absorbers, the higher the internal pressures, so the sooner the seals fail - often with a clunking noise over bumps.
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Old 04-30-22, 09:08 PM
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jprebb
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I changed shocks and struts about 18 months ago, so I don't think that is the problem. I'm half tempted to mount a gopro and see what might be moving around. Whatever it is, it's not loaded, IE it's free to travel up and down. I think!

JP
Old 04-30-22, 09:10 PM
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jprebb
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Originally Posted by Barc0de
I have the same noises. I'm interested in what people have to say. Are you positive that bushing is the issue?
I am not positive. The fact that I cannot apparently buy that busing on its own makes me even less confident that it's the problem.
Old 05-01-22, 06:30 AM
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bclexus
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Originally Posted by jprebb
I changed shocks and struts about 18 months ago, so I don't think that is the problem. I'm half tempted to mount a gopro and see what might be moving around. Whatever it is, it's not loaded, IE it's free to travel up and down. I think!

JP
A blown shock has little or no tension and is free to travel up and down...
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