Welcome to the North American Subaru Impreza Owners Club Tuesday July 26, 2016
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Click here to visit TireRack
Brakes & Suspension Forum sponsored by The Tire Rack

Losing traction? Need new tires?
Click here to visit the NASIOC Upgrade Garage...
Go Back   NASIOC > NASIOC Technical > Brakes, Steering & Suspension

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 06-23-2015, 12:51 PM   #1
Tony B
Scooby Newbie
 
Member#: 327597
Join Date: Jul 2012
Default Front end CLUNK at low speeds

Hey guys and gals, 2005 Subaru STI with stock suspension having some CLUNKing noise coming from the front and rear end while driving at low speeds. The clunk happens after lightly accelerating (0-10mph in a straight line) letting off the gas and then CLUNK! from the front end.

It also sounds like the noise is periodically coming from the rear end as well. I've done enough research to know the rear diff likes to make noise here and there which is normal so I'm not too concerned about it.


Diagnosis done so far

Made sure all bolts in the exhaust, suspension and all mounting brackets underneath are tight and not broken

Grabbed and shook all suspension components with front end in the air to see if the noise could be replicated

No luck so far...I'm going to check the pitch stop tonight after work

Can anyone shed some light on this problem or provide any advice as to where else this noise may be coming from?

Thanks!!
* Registered users of the site do not see these ads.
Tony B is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 06-23-2015, 01:14 PM   #2
isotopesope
Scooby Specialist
 
Member#: 265783
Join Date: Dec 2010
Chapter/Region: RMIC
Location: monica's taco shop
Vehicle:
2008 wrx
Niner ROS 9

Default

it could be motor/tranny/diff mounts getting sloppy...
isotopesope is offline   Reply With Quote
Old 06-23-2015, 01:32 PM   #3
Tony B
Scooby Newbie
 
Member#: 327597
Join Date: Jul 2012
Default

Quote:
it could be motor/tranny/diff mounts getting sloppy...
That was my first thought, but nothing looks like it's severly aged or rotted out after inspection
Tony B is offline   Reply With Quote
Old 06-23-2015, 01:49 PM   #4
mitch808
Scooby Specialist
 
Member#: 10228
Join Date: Sep 2001
Vehicle:
2002 Subaru WRX

Default

Some very common things on an Impreza and your STi.

endlinks either gotten loose or broken
strut clunk (You can regrease them)
as mentioned motor or trans mounts aging
mitch808 is offline   Reply With Quote
Old 06-23-2015, 02:08 PM   #5
MikesSTi
Scooby Newbie
 
Member#: 412885
Join Date: Feb 2015
Chapter/Region: South East
Location: Atlanta
Vehicle:
2006 Sti
Blue

Default

My 06 Sti does the same thing when coming to a stop, I can feel it in the brake pedal. Going to pull the front wheels off today and see what I can find.
MikesSTi is offline   Reply With Quote
Old 06-23-2015, 02:35 PM   #6
Tony B
Scooby Newbie
 
Member#: 327597
Join Date: Jul 2012
Default

Quote:
Some very common things on an Impreza and your STi.

endlinks either gotten loose or broken
strut clunk (You can regrease them)
as mentioned motor or trans mounts aging
Thanks for info! The endlinks seem to be solid from visual inspection and yanking on them. Is there another way to test their structural strength without popping them off? My guess is if I take them off, they aren't going back on again.

I do plan on getting a set of coilovers in the near future so that'll take care of the random strut clunk I hear in the back end.

Quote:
My 06 Sti does the same thing when coming to a stop, I can feel it in the brake pedal. Going to pull the front wheels off today and see what I can find.
Good luck! The clunk I'm feeling is definitely in the suspension/drivetrain. Have you checked the spot welds on your firewall to see if they're damaged or broken? These cars love breaking the welds that hold the pedal assembly to the firewall
Tony B is offline   Reply With Quote
Old 06-30-2015, 01:54 AM   #7
jbirish
Scooby Newbie
 
Member#: 424236
Join Date: Jun 2015
Chapter/Region: NESIC
Vehicle:
2009 WRX
Blue

Default

Pull down or push up on the sway bar and then try to move the end link up/down. That may help to see if there is any play in them.
jbirish is offline   Reply With Quote
Old 06-30-2015, 05:51 AM   #8
Uncle Scotty
*** Banned ***
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK buy Nates beans
westcoastroasting.com

Default

Quote:
Originally Posted by Tony B View Post
Good luck! The clunk I'm feeling is definitely in the suspension/drivetrain. Have you checked the spot welds on your firewall to see if they're damaged or broken? These cars love breaking the welds that hold the pedal assembly to the firewall

I HAVE NEVER SEEN ANY REPORTED FIREWALL SPOT WELD ISSUES FOR THE GD CHASSIS.
Uncle Scotty is offline   Reply With Quote
Old 06-30-2015, 11:46 AM   #9
mrsaturn7085
Scooby Specialist
 
Member#: 375462
Join Date: Dec 2013
Location: Portland, OR
Vehicle:
2006 Impreza WRX STI
WR Blue

Default

Quote:
Originally Posted by MikesSTi View Post
My 06 Sti does the same thing when coming to a stop, I can feel it in the brake pedal. Going to pull the front wheels off today and see what I can find.
If this is only at slow speeds and you can feel it in the brake pedal, it sounds like brake pad click to me. This is normal on any car with solid mounted calipers (i.e. not sliding pins). To test this, go back and forth between reverse and 1st. If it clicks every time you touch the brake, it's just the pads and isn't an issue.

This doesn't sound like the same noise as the original post.
mrsaturn7085 is offline   Reply With Quote
Old 07-01-2015, 10:59 AM   #10
MikesSTi
Scooby Newbie
 
Member#: 412885
Join Date: Feb 2015
Chapter/Region: South East
Location: Atlanta
Vehicle:
2006 Sti
Blue

Default

Quote:
Originally Posted by mrsaturn7085 View Post
If this is only at slow speeds and you can feel it in the brake pedal, it sounds like brake pad click to me. This is normal on any car with solid mounted calipers (i.e. not sliding pins). To test this, go back and forth between reverse and 1st. If it clicks every time you touch the brake, it's just the pads and isn't an issue.

This doesn't sound like the same noise as the original post.
Never noticed a clunk in my 300zx with ap 6 piston calipers or my 2011 Mustang with brembos. I ran several kinds of pads with those. But i did what you said and its not uniform, only happens when I come to a stop. I pulled the front wheels off and did not see anything broken or loose. This is my first time using Tein coilover so I might pull those off and go over them for any anything loose or broken.
MikesSTi is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 07:23 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2016 Axivo Inc.
Copyright ©1999 - 2016, North American Subaru Impreza Owners Club, Inc.