Welcome to the North American Subaru Impreza Owners Club Monday September 22, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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 > Service & Maintenance

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 04-30-2014, 09:35 PM   #1
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default Clunking noise?

Lately I've been hearing a clunking noise coming from the back of the 2005 OBS, mainly when going over bumpy roads. My thought was maybe part of the exhaust system is hitting something when I go over a bump, but it seems tight. Jacked up both rear wheels and no excessive play. The sway bar seems tight and the end links don't seem worn out. The spare tire is bolted down tight.

I can't seem to find anything loose, so I'm not sure what I'm hearing and if it's potentially serious or just an annoyance.
* Registered users of the site do not see these ads.
Stevo F is offline   Reply With Quote
Old 04-30-2014, 09:43 PM   #2
802-303
Scooby Newbie
 
Member#: 283194
Join Date: May 2011
Chapter/Region: RMIC
Location: Colorado
Default

Sounds like a strut, or a strut tower mount. I'd check for leaks or worn strut tops.
802-303 is offline   Reply With Quote
Old 04-30-2014, 10:45 PM   #3
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

Thank you. Is it safe to ride around on it in the meantime? (My Legacy is in the shop right now so no extra car available). How can you tell if the strut top is worn, or check for worn struts in general.

The car has 130K miles and I assume the struts are original. I think my '98 Legacy may be making the same noise but less noticeable.
Stevo F is offline   Reply With Quote
Old 04-30-2014, 11:41 PM   #4
Shiftace420
Scooby Newbie
 
Member#: 383633
Join Date: Mar 2014
Chapter/Region: RMIC
Location: Yampa, CO
Vehicle:
2002 Impreza WRX
Silver

Default

On the side of the car look into the fender well. Inside the big coil spring there is a tube with a protective boot on the upper end. That tube is the strut. IF you notice any leaking/seeping oil around that protective boot cover area the strut is for sure bad.

When you go over bumps does it just jump over the bump or does it keep bouncing and take a minute to settle back to normal ride? Like an old 1970's car?

The top of the tube where the spring attached is the strut cap or hat. It can be accessed from inside the vehicle in the back or under the hood in the front.

Just another thing to remember: I had a strut that was making noise over bumps one time. It ended up being a broken strut shaft inside the strut itself. The two broken pieces were banging together when you would go over bumps still rode pretty normal and was not leaking. That one took me a while to figure out. Searched everything all over before i decided to change the struts for other reasons and the strut fell apart after pulling it lol.
Shiftace420 is offline   Reply With Quote
Old 05-01-2014, 08:21 AM   #5
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

The ride is pretty good (firm, but not bouncy) so I doubt the struts are worn out. I'll try to get up under there to check it out.

Also a weird thing- When I drove the car this morning, the "Cruise" light on the dash is staying on. I never used cruise control but I'm guessing that's it's for. Cruise control is not activated, but I was lookign around under the back of the car last night for noise it's making (doubt anything to do with cruise control is back there, though).
Stevo F is offline   Reply With Quote
Old 05-06-2014, 09:20 AM   #6
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

I can't see any leaking from the rear struts. Is there another way to narrow them down as the source of the noise?
Stevo F is offline   Reply With Quote
Old 05-06-2014, 12:45 PM   #7
Scoobiesdoobies
Scooby Specialist
 
Member#: 321546
Join Date: May 2012
Chapter/Region: BAIC
Location: Santa Cruz, Ca
Vehicle:
2006 Wrx Limited
OBP

Default

Quote:
Originally Posted by Stevo F View Post
The ride is pretty good (firm, but not bouncy) so I doubt the struts are worn out. I'll try to get up under there to check it out.

Also a weird thing- When I drove the car this morning, the "Cruise" light on the dash is staying on. I never used cruise control but I'm guessing that's it's for. Cruise control is not activated, but I was lookign around under the back of the car last night for noise it's making (doubt anything to do with cruise control is back there, though).
Usually the cruise control light stays on with the check engine light. Means your car is throwing a code. Go get the code checked out. Also might be your gas cap.....

Pull your rear seats and look at the tophats too. Remove metal cover and replace the bolts on the studs.
Scoobiesdoobies is offline   Reply With Quote
Old 05-06-2014, 01:28 PM   #8
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

Actually the Cruise light went out again when I drove the car that afternoon. Apparently all of the flooding rains I drove though the night before caused water to get in somewhere it shouldn't, until it had a chance to dry out the next day.
Stevo F is offline   Reply With Quote
Old 05-06-2014, 01:39 PM   #9
Scoobiesdoobies
Scooby Specialist
 
Member#: 321546
Join Date: May 2012
Chapter/Region: BAIC
Location: Santa Cruz, Ca
Vehicle:
2006 Wrx Limited
OBP

Default

Quote:
Originally Posted by Stevo F View Post
Actually the Cruise light went out again when I drove the car that afternoon. Apparently all of the flooding rains I drove though the night before caused water to get in somewhere it shouldn't, until it had a chance to dry out the next day.
Might want to get it checked out soon. It will tell you in your manual what its for. Mine came on the first day I bought my car and it was a gas cap.
Scoobiesdoobies is offline   Reply With Quote
Old 05-07-2014, 09:03 AM   #10
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

Not too concerned about the light since it only cam eon that one time and never again, and most times there's an issue with it is when it comes on with a CEL (which it didn't).

More concerned about the clunk. Thinking it is the struts- was reading that some of these struts need more grease internally, but they don't seem like they are user serviceable so I am likely to just replace the back ones for now.

Anyone have any suggestions a good brand of stock replacement struts for a plain vanilla Impreza?

Also, as I have never changed out a strut before, it appears that it's not a difficult process from what I've seen on YouTube, etc...

.... Unbolt two large bolts hold bottom of strut to knuckle (as well as brake line or ABS sensor)- this seems like it might be the hardest part to get these free after 9 years in Pennsylvania.

Take thee nuts off of the top, remove strut, compress spring using spring compressor, remove large nut, remove top hat and reattach to new strut along with spring, re-install...

Any other tips, advice on strut replacement?
Stevo F is offline   Reply With Quote
Old 05-07-2014, 01:28 PM   #11
Buck Rogers
Scooby Newbie
 
Member#: 139234
Join Date: Jan 2007
Chapter/Region: NESIC
Location: Vassalboro, ME
Vehicle:
05NA Lifted Baja MT
Brilliant Silver

Default

Possibly rear sway bar bushings, cheap fix and easy DYI as well
Buck Rogers is offline   Reply With Quote
Old 05-07-2014, 02:38 PM   #12
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

For the sway bar, I assume if the bushings are bad it will no longer be a tight fit (will have play in the fit of the bar in the bushings?) Also, would the sway bar feel loose end to end if the end links are bad?
Stevo F is offline   Reply With Quote
Old 05-14-2014, 09:39 AM   #13
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

I put the back of the car up on stands yesterday to give the rear suspension a once over. Everything including the sway bar seems tight. I did notice a little oily residue where the bottom of the plastic sleeve meets the strut body on the driver's side (which is where the noise is coming from) but I'm not sure it's really a leak.

Thinking of going ahead and doing the rear struts- what are some good replacements for a stock Impreza? Also what tools/ equipment would be needed- and anything else to watch for?
Stevo F is offline   Reply With Quote
Old 05-14-2014, 10:32 AM   #14
fastnoypi
Scooby Specialist
 
Member#: 6886
Join Date: May 2001
Chapter/Region: Tri-State
Vehicle:
MY01 EJ207 HTA35r
nothing to see, i'm stock

Default

Try loading the suspected clunking corner by standing in your rear door jamb and bouncing the car..if you hear the clunk and everything is nice and tight on the components, ie swaybar links. i'd suspect its your top strut shaft nut backed out or the strut itself is dead. You can further verify by dropping the strut out, compressing the spring with a spring compressor, removing the mount and pushing down on the strut shaft till it bottoms out. If it doesnt rebound all the way to the top within a reasonable time on its own, its dead.

For an otherwise stock impreza, KYB GR2's have a nice ride.
fastnoypi is offline   Reply With Quote
Old 05-14-2014, 10:46 PM   #15
Scoobiesdoobies
Scooby Specialist
 
Member#: 321546
Join Date: May 2012
Chapter/Region: BAIC
Location: Santa Cruz, Ca
Vehicle:
2006 Wrx Limited
OBP

Default

Quote:
Originally Posted by Stevo F View Post
I put the back of the car up on stands yesterday to give the rear suspension a once over. Everything including the sway bar seems tight. I did notice a little oily residue where the bottom of the plastic sleeve meets the strut body on the driver's side (which is where the noise is coming from) but I'm not sure it's really a leak.

Thinking of going ahead and doing the rear struts- what are some good replacements for a stock Impreza? Also what tools/ equipment would be needed- and anything else to watch for?
If you get complete replacements with springs and tophats it wont take very long.

Need a 19mm 1/2" drive socket. Long and short.

19mm box open and

24" breaker bar 1/2 drive.

14mm wrench

12mm wrench

Torque wrench 1/2" drive

Basic tools.

Basic job really. Caveman grunt work is all.

Rear seats will. Need to come out too.
Scoobiesdoobies is offline   Reply With Quote
Old 05-24-2014, 11:57 AM   #16
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

Got some new KYB GR2 struts yesterday (for the back). I started working on the two large 19mm bolts that attach the strut to the knuckle. After PB blasting for a couple of days, I was able to work the nuts off the top bolts with my breaker bar and tap on the end of the bolt to drive it out enough to get a box wrench on the lower one (a socket won't work because the axle is in the way).

On the passenger's side I was able to get the nut loose using the box wrench and a two pound hammer, however I haven't been able to drive the bolt out of the hole (I was using a short piece of pipe and a hammer).

The driver's side (which looks rustier), again, no issue with getting the top nut and bolt loose but the angle for the box wrench makes it hard to whack with the hammer to break it loose. Since the box wrench is 12 point, I feel it's starting to rounding off the nut if I keep hitting it. Seems like if I had a 6 point 19MM box wrench , it might work but nobody seems to sell such a tool.

I which I were the Hulk and could just break them loose with pushing on the box wrench, but the hammer seems the only way for me. I wish I could get a socket on the lower nuts!

Anyone have any ideas or tips on how to get the frozen lower nuts and bolts out without having to pull the axle? I guess I'll keep PB Blasting in the meantime...
Stevo F is offline   Reply With Quote
Old 05-26-2014, 12:15 AM   #17
alanlcit
Scooby Newbie
 
Member#: 71108
Join Date: Sep 2004
Chapter/Region: SCIC
Location: San Diego, CA
Vehicle:
2005 WRX STi
Silver

Default

Quote:
Originally Posted by Stevo F View Post
Got some new KYB GR2 struts yesterday (for the back). I started working on the two large 19mm bolts that attach the strut to the knuckle. After PB blasting for a couple of days, I was able to work the nuts off the top bolts with my breaker bar and tap on the end of the bolt to drive it out enough to get a box wrench on the lower one (a socket won't work because the axle is in the way).

On the passenger's side I was able to get the nut loose using the box wrench and a two pound hammer, however I haven't been able to drive the bolt out of the hole (I was using a short piece of pipe and a hammer).

The driver's side (which looks rustier), again, no issue with getting the top nut and bolt loose but the angle for the box wrench makes it hard to whack with the hammer to break it loose. Since the box wrench is 12 point, I feel it's starting to rounding off the nut if I keep hitting it. Seems like if I had a 6 point 19MM box wrench , it might work but nobody seems to sell such a tool.

I which I were the Hulk and could just break them loose with pushing on the box wrench, but the hammer seems the only way for me. I wish I could get a socket on the lower nuts!

Anyone have any ideas or tips on how to get the frozen lower nuts and bolts out without having to pull the axle? I guess I'll keep PB Blasting in the meantime...
For the passenger side:

For driving the bolt out of the hole on the passenger side, I found on the front of my STi it was very difficult to get the bolts out if the other side of the car was not jacked up. I used my jack and put a jackstand under the other side too, and it freed things up a bit. I don't know whether that will be applicable in your case, but the suspension components will exert forces that may jam things up if your car is tilted to one side. Worth a try....

Another option: the strut should be at full extension when the car is jacked up (I am not sure about this - but I think so, otherwise you'd need to compress the spring and strut together when putting the bolts back in - which I know was not necessary on my car (only necessary to spring compress when putting the strut/coil assembly together)). Anyway, if it is at full extension, another thing might be the weight of the wheel/hub/knuckle is jamming the bolt in place, so you could try lifting the wheel. It depends which way the forces are on the bolt that are jamming it in place.

For the driver's side:
Unless you can borrow an impact wrench from someone, I would just keep PB blasting. Even an impact wrench (I think it was only a 300ft-lb max one, so it was kind of weak...) wouldn't free up some of the bolts on my car, but it does a lot of pounding like a hammer would and may have made it easier when I finally got the nuts off - and it doesn't damage the nuts, which is very important.

I think I remember using a 12 point 19mm box end wrench and bracing the feet inside the wheel well, and tugging away. After a lot of PB blaster. It'll go, eventually, with the right wrenching setup and using your weight and position to your advantage. Please just make sure the car is 100% stable on good jackstands, with redundancy/backup (a wheel under the car or something)!
alanlcit is offline   Reply With Quote
Old 05-26-2014, 03:42 AM   #18
Scoobiesdoobies
Scooby Specialist
 
Member#: 321546
Join Date: May 2012
Chapter/Region: BAIC
Location: Santa Cruz, Ca
Vehicle:
2006 Wrx Limited
OBP

Default

Pb blaster worked for me my first time after breaking a socket with an impact driver.

My 2nd strut job I used a 24" breaker bar, 19mm 6 point long and short sockets for the bolt side and a regular 19mm box open end for the nut. Have to turn the wheels back and fourth to get the right bite on the bolts.
Like stated above make sure either the front or the rear of the car is off the ground. Not corner by corner.

The first time I did my struts it took 2 full days.

2nd time I did them I did 2 cars at the same time and it took me 6 hours.

That bolts going to be corroded in there. Try aerokroil.
Scoobiesdoobies is offline   Reply With Quote
Old 05-26-2014, 02:32 PM   #19
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

I had both rear corners of the car up on stands, so equal force on each side. I just wish the axle wasn't in the way of the bottom bolt, so I could try to get a 6 point socket on it. I think trying to loosen by turning the bolt is all that much harder because of the bolt being rusted inside the hole that goes through the knuckle and the strut.

I wonder if I'll have to chisel the nut off...
Stevo F is offline   Reply With Quote
Old 05-26-2014, 04:28 PM   #20
JohnM10
Scooby Newbie
 
Member#: 244231
Join Date: Apr 2010
Chapter/Region: NESIC
Location: Providence, RI, USA
Vehicle:
2006 Impreza 2.5i 5M
Crystal Grey Metallic

Default

Try putting a box wrench on the lower bolt head and let it brace itself on the wheel hub. This is how I got mine off. I am almost finished installing them. It was a lot harder of a job than I was expecting as I do not have an impact wrench and New England winters rally do a number on rusting up bolts real good.
JohnM10 is offline   Reply With Quote
Old 05-26-2014, 09:21 PM   #21
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

Quote:
Originally Posted by JohnM10 View Post
Try putting a box wrench on the lower bolt head and let it brace itself on the wheel hub. This is how I got mine off. I am almost finished installing them. It was a lot harder of a job than I was expecting as I do not have an impact wrench and New England winters rally do a number on rusting up bolts real good.
Thank you- what did you use to turn the nut (since I can only get a box wrench on there because the axle is in the way)?

Yep- plenty of rust on the underside of this car, too (from Wilkes-Barre, PA area)- the front brake rotor backing plates literally crumbled apart when I did a brake job last week.
Stevo F is offline   Reply With Quote
Old 06-06-2014, 09:27 PM   #22
Stevo F
Scooby Newbie
 
Member#: 350842
Join Date: Mar 2013
Location: Virginia
Vehicle:
2005 Impreza Outback
Green

Default

I ended up spending several hours trying to break it loose, then i broke down and took it over to my mechanic (who said he nearly threw his back out but finally broke the lower bolt loose). Now I have two new struts installed and no more clunk. Now just to replace those noisy tires...
Stevo F is offline   Reply With Quote
Old 06-07-2014, 12:14 PM   #23
Shiftace420
Scooby Newbie
 
Member#: 383633
Join Date: Mar 2014
Chapter/Region: RMIC
Location: Yampa, CO
Vehicle:
2002 Impreza WRX
Silver

Default

So the clunk was in a strut?
Shiftace420 is offline   Reply With Quote
Old 06-07-2014, 05:31 PM   #24
Scoobiesdoobies
Scooby Specialist
 
Member#: 321546
Join Date: May 2012
Chapter/Region: BAIC
Location: Santa Cruz, Ca
Vehicle:
2006 Wrx Limited
OBP

Default

Quote:
Originally Posted by Stevo F View Post
I ended up spending several hours trying to break it loose, then i broke down and took it over to my mechanic (who said he nearly threw his back out but finally broke the lower bolt loose). Now I have two new struts installed and no more clunk. Now just to replace those noisy tires...
Pb blaster or aerokroil does wonders for us weak folk........and a 2 foot breaker bar. If its the first time doing it then they can be very very hard to remove. But with the right pressure applied they come right off. Im always nervous doing a cars first replacement of a part due to stubborn bolts.
Scoobiesdoobies 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 04:29 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.