Sway bar noise? - Toyota Yaris Forums

Black_griffin6 · 12-03-2011, 10:42 AM

Hey guys, i've recently installed the Ultra racing 23mm sway bar on my Yaris, and it works great!
But ever since i've put it on, i've noticed a thumping noise whenever I drive over a bump in the road.

I want to say it sounds like the shock absorbers, but i've never noticed them making this much noise before.

I have no other suspension mods, i'm on stock wheels and tires, and i'm only at 20k miles.
I'm not too worried about it as the car doesn't feel like anything is wrong, I just wonder what it is and if I should be worried about it.

cali yaris · 12-03-2011, 11:18 AM

Noises should be explained, in my opinion. I would get under there and look for worn/bare/shiny spots where any contact might show.

Blue painter's tape or chalk can also be used to "mark" suspect areas.

Can you post a picture of the installed bar?
Are the bolts torqued down properly for sure? Re-torqued?

A-Dingo-Ate-My-Baby · 12-03-2011, 12:06 PM

takes some pictures of how you bolted it up on both sides and post 'em here

Betrivent · 12-03-2011, 12:51 PM

as garm says it sounds like rubbing between the bar and maybe the bottom of the shock? Perhaps on of the bolts has come loose and there's play which sounds like a thump in the cabin.

Black_griffin6 · 12-03-2011, 03:30 PM

Quote:

Originally Posted by Betrivent

as garm says it sounds like rubbing between the bar and maybe the bottom of the shock? Perhaps on of the bolts has come loose and there's play which sounds like a thump in the cabin.

Yeah, I think this is it.

I was going to check if the bolts were loose anyway, as i've read that you need to tighten them after you've driven the car for a little while after it's installed.
The ones on the shocks were a little loose, I got them tightened up so i'm going to try and go for a drive this evening and see if that has solved it.

Thanks for your help guys!

A-Dingo-Ate-My-Baby · 12-03-2011, 03:44 PM

I found that... once tight, the 4 bolts on the UR23mm do not tend to work themselves loose after many miles of driving. over 15,000 on it and not once have they loosened

cali yaris · 12-03-2011, 03:53 PM

Here is my DIY, shows the correct orientation of the bar:

http://www.yarisworld.com/forums/sho...t=diy+sway+bar

Black_griffin6 · 12-05-2011, 11:20 PM

Just an update guys: I tightened the bolts and that fixed it! All is well now. :)
Thanks guys!

12-03-2011, 10:42 AM	#1
Black_griffin6 View User's Garage Drives: 09 Meteoric Metallic 3 door HB Join Date: Jul 2010 Location: Atlanta Georgia Posts: 419	Sway bar noise? Hey guys, i've recently installed the Ultra racing 23mm sway bar on my Yaris, and it works great! But ever since i've put it on, i've noticed a thumping noise whenever I drive over a bump in the road. I want to say it sounds like the shock absorbers, but i've never noticed them making this much noise before. I have no other suspension mods, i'm on stock wheels and tires, and i'm only at 20k miles. I'm not too worried about it as the car doesn't feel like anything is wrong, I just wonder what it is and if I should be worried about it.

12-03-2011, 11:18 AM	#2
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	Noises should be explained, in my opinion. I would get under there and look for worn/bare/shiny spots where any contact might show. Blue painter's tape or chalk can also be used to "mark" suspect areas. Can you post a picture of the installed bar? Are the bolts torqued down properly for sure? Re-torqued? __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

12-03-2011, 03:53 PM	#7
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	Here is my DIY, shows the correct orientation of the bar: http://www.yarisworld.com/forums/sho...t=diy+sway+bar __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

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12-03-2011, 12:06 PM	#3
A-Dingo-Ate-My-Baby Banned Drives: yaris Join Date: Jan 2011 Location: earth Posts: 364	takes some pictures of how you bolted it up on both sides and post 'em here

12-03-2011, 12:51 PM	#4
Betrivent Not quite a noob Drives: e46 325 Join Date: Jul 2009 Location: edmonton Posts: 1,408	as garm says it sounds like rubbing between the bar and maybe the bottom of the shock? Perhaps on of the bolts has come loose and there's play which sounds like a thump in the cabin.

12-03-2011, 03:44 PM	#6
A-Dingo-Ate-My-Baby Banned Drives: yaris Join Date: Jan 2011 Location: earth Posts: 364	I found that... once tight, the 4 bolts on the UR23mm do not tend to work themselves loose after many miles of driving. over 15,000 on it and not once have they loosened

12-05-2011, 11:20 PM	#8
Black_griffin6 View User's Garage Drives: 09 Meteoric Metallic 3 door HB Join Date: Jul 2010 Location: Atlanta Georgia Posts: 419	Just an update guys: I tightened the bolts and that fixed it! All is well now. :) Thanks guys!