Welcome to the North American Subaru Impreza Owners Club Friday May 22, 2015
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...
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
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 08-17-2014, 02:01 AM   #26
MedicDG
Scooby Specialist
 
Member#: 329822
Join Date: Aug 2012
Location: Roseville, CA
Vehicle:
2012 WRX, Sedan
WRB

Default

You may need new tires cupping could cause your problem with vibration at freeway speed.

Wheel spacers can also be your problem.

If your wheels are not centered hub that can also cause your problem.

Alignment should be zero toe in all four corners.

Honestly I feel you have a worn suspension part problem. I would start with a worn ball joint. Subaru are known to have ****ty ball joints. Sounds like you are using wider tires with spacers so you can cause your ball joints to wear faster. I don't know how many miles on your car but those are cheap and easy to replace so you may want to think about that.

DG
* Registered users of the site do not see these ads.
MedicDG is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 08-17-2014, 02:16 AM   #27
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

Quote:
Originally Posted by MedicDG View Post
You may need new tires cupping could cause your problem with vibration at freeway speed.

Wheel spacers can also be your problem.

If your wheels are not centered hub that can also cause your problem.

Alignment should be zero toe in all four corners.

Honestly I feel you have a worn suspension part problem. I would start with a worn ball joint. Subaru are known to have ****ty ball joints. Sounds like you are using wider tires with spacers so you can cause your ball joints to wear faster. I don't know how many miles on your car but those are cheap and easy to replace so you may want to think about that.

DG

The tires aren't that old. Maybe 6k miles.

The wheel spacers are hub centric, the literally pop onto the hub and don't move at all. They didn't vibrate before the car went down for a motor build either.

The wheels also have hub centric rings on them.

My ball joint are white line, and they maybe have 15k miles on them. If that even. Maybe 10k.

The car has 90k miles.

The BC BR coilovers with swift springs have about 20k on them as well. No leaking, no clunking, not harsh. Not signs of being blown at all.

And found out the other day, les Schwab didn't even rotate my tires.... Frustrating.




Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-17-2014, 02:23 AM   #28
MedicDG
Scooby Specialist
 
Member#: 329822
Join Date: Aug 2012
Location: Roseville, CA
Vehicle:
2012 WRX, Sedan
WRB

Default

Try moving front tires to rear. If vibration in steering wheel goes away and you can feel it in seat it's one of the rear tires.

If you rotate them and vibration in steering wheel is still there I say you got a suspension problem of some sort.

I would do this yourself if you can. I like to do my own work on my car because generally these shops make too many mistakes. I call it piece of mind. Ha
MedicDG is offline   Reply With Quote
Old 08-17-2014, 02:26 AM   #29
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default Steering wheel vibration highway

Quote:
Originally Posted by MedicDG View Post
Try moving front tires to rear. If vibration in steering wheel goes away and you can feel it in seat it's one of the rear tires.

If you rotate them and vibration in steering wheel is still there I say you got a suspension problem of some sort.

I would do this yourself if you can. I like to do my own work on my car because generally these shops make too many mistakes. I call it piece of mind. Ha

Yea I definitely like doing my own work too because of this crap. I've just been lazy, I don't have a garage tell September first when I move into my house.

I'll rotate them tomorrow night or Monday and report back.

If vibration is still there, I'm gonna try swapping tires with a buddy.

If problem is STILL there, I'm not sure what to do, take it to subaru maybe, because I've had two shops run through the suspension and they said everything looks and feels fine, and the last thing I wanna do is start just aimlessly buying new parts.

I don't even know what it could be suspension wise, almost everything has been replaced. Coils, sti control arms, anti lift kit, roll center kit, sways, endlinks, v7 hubs that are solid (no play), v7 axles (not making noise)





Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-17-2014, 02:29 AM   #30
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

I'm just praying it's not the steering rack.


Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-17-2014, 02:30 AM   #31
MedicDG
Scooby Specialist
 
Member#: 329822
Join Date: Aug 2012
Location: Roseville, CA
Vehicle:
2012 WRX, Sedan
WRB

Default

Ya let us know. I think your problem will go away after rotation. If not I say high percentage it going to be a suspension but hey I can be wrong.

Ps another thing u may try is get tires rotated by another shop.
MedicDG is offline   Reply With Quote
Old 08-17-2014, 05:49 AM   #32
MedicDG
Scooby Specialist
 
Member#: 329822
Join Date: Aug 2012
Location: Roseville, CA
Vehicle:
2012 WRX, Sedan
WRB

Default

Sorry not rotated but tires re balanced by another shop. I find America's Tire does a good job in that area.
MedicDG is offline   Reply With Quote
Old 08-17-2014, 05:49 AM   #33
MedicDG
Scooby Specialist
 
Member#: 329822
Join Date: Aug 2012
Location: Roseville, CA
Vehicle:
2012 WRX, Sedan
WRB

Default Steering wheel vibration highway

Quote:
Originally Posted by rymaggi View Post
I'm just praying it's not the steering rack.


Sent from my iPhone using NASIOC

Ya that would suck....report back Monday. Good luck!
MedicDG is offline   Reply With Quote
Old 08-17-2014, 12:16 PM   #34
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

Another thing..... So say I rotate them, fixes steering wheel vibration, won't the fronts just cup as well?




Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-17-2014, 12:19 PM   #35
Annihilator817
Scooby Specialist
 
Member#: 296742
Join Date: Oct 2011
Chapter/Region: NESIC
Location: RI
Vehicle:
'11 WRX, '96 328i,
'92 Civic SiR, '94 Civic

Default

Most likely if you dont fix the underlying issue that is causing the cupping.
Annihilator817 is online now   Reply With Quote
Old 08-17-2014, 12:21 PM   #36
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

What exactly can cause cupping. My toe is at zero now. And it's aligned.


Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-17-2014, 12:43 PM   #37
Annihilator817
Scooby Specialist
 
Member#: 296742
Join Date: Oct 2011
Chapter/Region: NESIC
Location: RI
Vehicle:
'11 WRX, '96 328i,
'92 Civic SiR, '94 Civic

Default

Blown shocks.
Annihilator817 is online now   Reply With Quote
Old 08-17-2014, 01:44 PM   #38
Blingstrom
Scooby Newbie
 
Member#: 322188
Join Date: Jun 2012
Chapter/Region: MWSOC
Location: Lawrence
Vehicle:
05 STi
CGM

Default

Lack of rotating tires can also cause cupping. Also bad toe out on the rear can magnify and make it come one faster.

Have you checked your p/s reservoir for air bubbles while running? Might have some clamps that have given up holding an air tight seal but aren't leaking fluid. It really sound like p/s based to me as it comes and goes.

I replaced the seals in my p/s pump and it had this weird shake on the highway that would come and go. This was right after I replaced them and it took about a week to get the air out. But not until I replaced the factory clamps did it finally go away for good. Seems like just moving those lines will sometimes break the seal of the old clamps and you just need to replace them. I would try that. Good luck.
Blingstrom is online now   Reply With Quote
Old 08-17-2014, 04:43 PM   #39
MedicDG
Scooby Specialist
 
Member#: 329822
Join Date: Aug 2012
Location: Roseville, CA
Vehicle:
2012 WRX, Sedan
WRB

Default

Quote:
Originally Posted by rymaggi View Post
Another thing..... So say I rotate them, fixes steering wheel vibration, won't the fronts just cup as well?




Sent from my iPhone using NASIOC

It's possible all four tires are not cupped. I feel rotating front to back will give u a idea what to do next.
MedicDG is offline   Reply With Quote
Old 08-17-2014, 09:21 PM   #40
vincybadman
Scooby Newbie
 
Member#: 147686
Join Date: Apr 2007
Default

Just did a jdm sti build and I am having the same exact problem!!! Will be replacing my rotors and Pads to see if it's helps... This is frustrating ...
vincybadman is offline   Reply With Quote
Old 08-17-2014, 09:23 PM   #41
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

Quote:
Originally Posted by vincybadman View Post
Just did a jdm sti build and I am having the same exact problem!!! Will be replacing my rotors and Pads to see if it's helps... This is frustrating ...

It sure is, about to change my oil and rotate my tires. Gonna try n bleed the system of an air if any, and also tighten down the clamps on the two hoses.


Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-17-2014, 10:25 PM   #42
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

Zero air in the system. So les Schwab rotated one side of the.... Left the Otherside the way it was.

Briefly checked the suspension bits as I pulled off each tire no play in anything, the axles did shake but hardly anything. Maybe a mm or two. If rotating, the side les Schwab didn't, does not work. I'm going to swap wheels with a buddy. To confirm if it's my tires or not.

If it's not the tires I'm literal lost as to what it could be.


Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-17-2014, 11:05 PM   #43
Blingstrom
Scooby Newbie
 
Member#: 322188
Join Date: Jun 2012
Chapter/Region: MWSOC
Location: Lawrence
Vehicle:
05 STi
CGM

Default

Unless you have tires that are separating or extremely cupped tires I am not thinking its an issue with the wheels/tires.Balanced or unbalanced wheels don't really come and go. Extreme as in a four or five/32nd difference between the cupped area and full tread. Unless you drove 10k+ miles with an exceptional bad alignment and worn suspension I cant see these tires being that bad. Also your cupped tires would be very noisy when first rotated to the front. Other than CV shaft issues its really hard to think of something else that causes intermittent vibrations.

How long has it been since your p/s pump was replaced? I have drove down the highway with air in the system and I could barely keep the wheel from exiting my hands at 75. And then magically it would be gone... Minutes later I am holding on for dear life. Car maintains straight trajectory but the steering wheel feels like its moving an inch in either direction. This really sounds like what your first post is describing. But I could be wrong.

I also had tried to bleed the air out of the system for an hour to still feel the same symptoms you speak of. Only came to the conclusion that without reclamping the return to reservoir line and reservoir to pump line my on and off steering wheel shake would not go away. Also found it usually takes a good week of driving to bleed it completely. Even after an hour of lock to lock with the front wheels off the ground... Air finds away in.
Blingstrom is online now   Reply With Quote
Old 08-17-2014, 11:35 PM   #44
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

Quote:
Originally Posted by Blingstrom View Post
Unless you have tires that are separating or extremely cupped tires I am not thinking its an issue with the wheels/tires.Balanced or unbalanced wheels don't really come and go. Extreme as in a four or five/32nd difference between the cupped area and full tread. Unless you drove 10k+ miles with an exceptional bad alignment and worn suspension I cant see these tires being that bad. Also your cupped tires would be very noisy when first rotated to the front. Other than CV shaft issues its really hard to think of something else that causes intermittent vibrations.



How long has it been since your p/s pump was replaced? I have drove down the highway with air in the system and I could barely keep the wheel from exiting my hands at 75. And then magically it would be gone... Minutes later I am holding on for dear life. Car maintains straight trajectory but the steering wheel feels like its moving an inch in either direction. This really sounds like what your first post is describing. But I could be wrong.



I also had tried to bleed the air out of the system for an hour to still feel the same symptoms you speak of. Only came to the conclusion that without reclamping the return to reservoir line and reservoir to pump line my on and off steering wheel shake would not go away. Also found it usually takes a good week of driving to bleed it completely. Even after an hour of lock to lock with the front wheels off the ground... Air finds away in.

I tried running my hands along the tires, I couldn't really feel the cupping. But the front two did have slight camber wear.

Both lines on the power steering pump were replaced with the new pump. Which happened about 2-3 months ago. The clamps on all the lines are worm clamps. I tightened them down, even though they where decently tight, the hose that attaches to the inlet on the pump has two worm clamps, the clamp on the inner outside, closest too the reservoir, was a little lose, not much. Tightened it down.

I can relate to the dear life situation before the pump. Now it's minor but differently a solid vibration, not something u can barely notice. It moves. It's like the new pump dumbed it down 75%.

Filling the car with oil now, gatta go pick up the o'l lady and my sister, and I'll be hoping on the freeway.

Will report back.


Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-17-2014, 11:51 PM   #45
Blingstrom
Scooby Newbie
 
Member#: 322188
Join Date: Jun 2012
Chapter/Region: MWSOC
Location: Lawrence
Vehicle:
05 STi
CGM

Default

I tightened my clamps moderately at first but yeah I changed that after still having some issues. Might go ahead and check the lines on the actual rack as well and if a seal on the rack was bad there should be some fluid in the bellows boot. Should be easy to check.

I went though like a month ordeal after putting in three p/s units before just rebuilding the original one. Changing those clamps and retightening them and so forth. Buying a new line after my old hose tore and then getting new crush washer for the line off the pump. Very agitating.

Reading your post just reminded me of how frustrating it was and I was hopeful some of my own experiences would help you not be tortured by this issue. Good luck. Hope you get it figured out soon.
Blingstrom is online now   Reply With Quote
Old 08-17-2014, 11:59 PM   #46
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

Quote:
Originally Posted by Blingstrom View Post
I tightened my clamps moderately at first but yeah I changed that after still having some issues. Might go ahead and check the lines on the actual rack as well and if a seal on the rack was bad there should be some fluid in the bellows boot. Should be easy to check.

I went though like a month ordeal after putting in three p/s units before just rebuilding the original one. Changing those clamps and retightening them and so forth. Buying a new line after my old hose tore and then getting new crush washer for the line off the pump. Very agitating.

Reading your post just reminded me of how frustrating it was and I was hopeful some of my own experiences would help you not be tortured by this issue. Good luck. Hope you get it figured out soon.

Thanks man. Yea it sucks. I have a fun car and I don't like doing pulls or passing people on the freeway because of it.

For the steering rack, checking the lines, do u mean those two hard lines. Also where and what does the seal look like. And for fluid being in the boots if it's leaking, do u mean literally on the inside of the boots or on the outside but closest to the middle of the car.


Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-18-2014, 12:01 AM   #47
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

Also, thanks for everyone's input and help. It's nice when you get positive feedback when dealing with a massive headache of a a problem like this. Greatly appreciate it.


Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-18-2014, 03:22 AM   #48
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

Vibration 98% gone. From just rotating one side.

I can still feel it just a smidge but hardly anything at all if any. At all speeds.


Sent from my iPhone using NASIOC
rymaggi is offline   Reply With Quote
Old 08-18-2014, 04:15 AM   #49
speedyHAM
Scooby Specialist
 
Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
Vehicle:
1996 Gutted, built
XP class Impreza L

Default

Honestly to me i sounds like a blown front control arm bushing is the underlying cause. Very hard to diagnose. Will cause cupping by itself and stead speed highway vibrations. Will go away under acceleration and braking due to elevated loads on the suspension in one direction changing the load vs. natural frequency of the suspension. I suggest replacing the front control arm bushings as a safety measure to prevent recurrence.

Just my opinion.

P.S. If Les Schwab can't get your alignment any closer than that side to side I'd head to a different shop. The difference side to side would never be ok for my autoX car.
speedyHAM is offline   Reply With Quote
Old 08-18-2014, 08:33 AM   #50
Blingstrom
Scooby Newbie
 
Member#: 322188
Join Date: Jun 2012
Chapter/Region: MWSOC
Location: Lawrence
Vehicle:
05 STi
CGM

Default

Seals are within the bellows boots Mon the steering rack so fluid will collect within them. Might see it damp around the clamps as well. I think there are connections from flexible lines on the steering rack to hard lines and I would check those clamps.
Blingstrom is online now   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 09:45 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2015, North American Subaru Impreza Owners Club, Inc.