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Old 11-10-2012, 06:16 PM   #1
moosen
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Default 2005 2.5rs Rear Diff and steering shudder, after first snow.

So we had our first snowfall here recently, and after driving around and playing around a bit in it, i noticed a click coming from the rear. Sounds like maybe the differential. It's very click click click click when under power then if I let off, it goes away for a second then when it starts engine braking it comes back.

Could it just be my rear differential gear oil?

As well randomly when driving straight I will get a steering wheel shudder, don't know why?
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Old 11-10-2012, 07:05 PM   #2
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the shutter sounds like you have snow stuck in your wheels.

the clicking i have no idea... maybe a cv...? Check for torn boots in the rear. Diffs don't typically make a click click noise. Usually more of a catastrophic noise. You could drain the oil and see if there are metal chunks on the magnetic plug.
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Old 11-10-2012, 08:27 PM   #3
moosen
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Quote:
Originally Posted by Zefy View Post
the shutter sounds like you have snow stuck in your wheels.

the clicking i have no idea... maybe a cv...? Check for torn boots in the rear. Diffs don't typically make a click click noise. Usually more of a catastrophic noise. You could drain the oil and see if there are metal chunks on the magnetic plug.

the axles look pretty good. Hmm I don't know. Just filled my diff with oil, it was pretty ****ing low so that's good regardless. But still click click click. Could it be something with the drive shaft. The sound only goes away when there is a transfer of body weight from rear to front or front to rear.
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Old 11-10-2012, 09:23 PM   #4
RaceFaceXC
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There is a whole forum for drivetrain related discussion and members with unique knowledge pertaining to the drivetrain frequent it. I would search there and then ask if you don't find any likely answers.
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Old 11-10-2012, 09:27 PM   #5
moosen
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Originally Posted by RaceFaceXC View Post
There is a whole forum for drivetrain related discussion and members with unique knowledge pertaining to the drivetrain frequent it. I would search there and then ask if you don't find any likely answers.
I saw that after this was posted. If a mod could move it to that forum it would be rad!
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Old 11-14-2012, 02:53 AM   #6
Tucci139
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Notice you have the same car as I do. I am having trouble finding a catback exhaust to fit my car - so you know of one that fits the 2005 Impreza RS?
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Old 11-14-2012, 03:20 AM   #7
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Quote:
Originally Posted by Zefy
the shutter sounds like you have snow stuck in your wheels.
This. The high pressure rinse at self serve car washes is great for getting snow out of annoying places.
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Old 11-14-2012, 04:13 AM   #8
moosen
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Quote:
Originally Posted by Fastie View Post
Notice you have the same car as I do. I am having trouble finding a catback exhaust to fit my car - so you know of one that fits the 2005 Impreza RS?
Full custom 2.5" back

Quote:
Originally Posted by Counterfit View Post
This. The high pressure rinse at self serve car washes is great for getting snow out of annoying places.
Did that. Shutter went away for the most part. What's left I believe is the wheel bearing.
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Old 11-14-2012, 12:19 PM   #9
T Wrex--OH
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Quote:
Originally Posted by moosen View Post
Did that. Shutter went away for the most part. What's left I believe is the wheel bearing.
Did you happen to bump something while sliding in the snow?

Either way, checking wheel bearings is easy. Jack the wheel up, grab hold of the tire, and try to move it back and forth. It should have no play.
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Old 11-14-2012, 01:38 PM   #10
moosen
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Quote:
Originally Posted by T Wrex--OH View Post
Did you happen to bump something while sliding in the snow?

Either way, checking wheel bearings is easy. Jack the wheel up, grab hold of the tire, and try to move it back and forth. It should have no play.
checked all bearings seemed a little loose. Not enough to be making noise.

Verdict is that it is most likely bearings in the rear diff. Breaking into it friday to check further! Excited to work on my car, not excited to spend money.
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Old 11-14-2012, 05:17 PM   #11
chazly413
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How do you define pretty ****ing low on the rear diff oil? You know there really isn't supposed to be too much in the rear diff, no more than half a quart. I'm not trying to sound condescending, by the way. Just ruling stuff out.
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Old 11-14-2012, 09:57 PM   #12
moosen
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Quote:
Originally Posted by chazly413 View Post
How do you define pretty ****ing low on the rear diff oil? You know there really isn't supposed to be too much in the rear diff, no more than half a quart. I'm not trying to sound condescending, by the way. Just ruling stuff out.
I had to add a good amount before it overflowed.
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Old 11-15-2012, 10:57 PM   #13
chazly413
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Overflowing from which plug?
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Old 11-15-2012, 10:57 PM   #14
Counterfit
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Hopefully the top.
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Old 11-15-2012, 11:00 PM   #15
chazly413
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Never mind, I'm an idiot. Disregard my previous statements.
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Old 11-18-2012, 12:19 PM   #16
Bluefoton
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Quote:
Originally Posted by Fastie View Post
Notice you have the same car as I do. I am having trouble finding a catback exhaust to fit my car - so you know of one that fits the 2005 Impreza RS?
a STi one, with one minor flange rotation.
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Old 11-18-2012, 02:54 PM   #17
Tucci139
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Quote:
Originally Posted by Bluefoton View Post
a STi one, with one minor flange rotation.
Sorry to hijack post a bit - I found a great exhaust Stomung dual tip - made for the RS - getting right from manufacturer. Can't wait to receive it - I plan on doing a report on this before and after install.

As far as noise for this post - I do have a suggestion to consider - are your cats good? I just got my car used and the mechanic said the rattling sound was coming from my cats which need to be replaced. Your symptoms could eb caused by this if the ceramic in the cats broke apart and started restricting the air flow of the exhaust - just a thought, other suggestions seem feasible as well - be interested in knowing how your situation turns out to help me in the future and other RS owners as well.
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