2005 2.5rs Rear Diff and steering shudder, after first snow.

moosen · 11-10-2012, 06:16 PM

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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Zefy · 11-10-2012, 07:05 PM

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.

moosen · 11-10-2012, 08:27 PM

Quote:

Originally Posted by Zefy

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.

RaceFaceXC · 11-10-2012, 09:23 PM

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.

moosen · 11-10-2012, 09:27 PM

Quote:

Originally Posted by RaceFaceXC

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!

Tucci139 · 11-14-2012, 02:53 AM

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?

Counterfit · 11-14-2012, 03:20 AM

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.

moosen · 11-14-2012, 04:13 AM

Quote:

Originally Posted by Fastie

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

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.

T Wrex--OH · 11-14-2012, 12:19 PM

Quote:

Originally Posted by moosen

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.

moosen · 11-14-2012, 01:38 PM

Quote:

Originally Posted by T Wrex--OH

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.

chazly413 · 11-14-2012, 05:17 PM

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.

moosen · 11-14-2012, 09:57 PM

Quote:

Originally Posted by chazly413

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.

chazly413 · 11-15-2012, 10:57 PM

Overflowing from which plug?

Counterfit · 11-15-2012, 10:57 PM

Hopefully the top.

chazly413 · 11-15-2012, 11:00 PM

Never mind, I'm an idiot. Disregard my previous statements.

Bluefoton · 11-18-2012, 12:19 PM

Quote:

Originally Posted by Fastie

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.

Tucci139 · 11-18-2012, 02:54 PM

Quote:

Originally Posted by Bluefoton

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.

11-10-2012, 06:16 PM	#1
moosen Scooby Newbie Member#: 313040 Join Date: Mar 2012 Chapter/Region: NWIC Location: Bozeman, MT Vehicle: 2003 Wrx Hybrid WRB	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? * Registered users of the site do not see these ads.

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11-10-2012, 07:05 PM	#2
Zefy Scooby Specialist Member#: 105104 Join Date: Jan 2006 Chapter/Region: VIC Location: Coquitlam, BC, Canada Vehicle: 1979 BRAT / 01 RSTI 99 2.5TS (DEAD) / 87 GL	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.

11-10-2012, 09:23 PM	#4
RaceFaceXC Scooby Specialist Member#: 165749 Join Date: Dec 2007 Chapter/Region: South East Location: stupid Florida Vehicle: 2007 No YELLING on the bus!	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.

11-14-2012, 02:53 AM	#6
Tucci139 NASIOC Supporter Member#: 336953 Join Date: Nov 2012 Chapter/Region: MAIC Location: Maryland Vehicle: 2005 Impreza 2.5RS Regal Blue Pearl	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?

11-14-2012, 05:17 PM	#11
chazly413 Scooby Specialist Member#: 151079 Join Date: Jun 2007 Chapter/Region: MAIC Location: College Park, MD Vehicle: 2005 2.5RS RBP s-techs mad tyte yo	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.

11-15-2012, 10:57 PM	#13
chazly413 Scooby Specialist Member#: 151079 Join Date: Jun 2007 Chapter/Region: MAIC Location: College Park, MD Vehicle: 2005 2.5RS RBP s-techs mad tyte yo	Overflowing from which plug?

11-15-2012, 10:57 PM	#14
Counterfit Scooby Specialist Member#: 124254 Join Date: Aug 2006 Chapter/Region: NESIC Location: Rhode Island Vehicle: 2006 06 SGM Slowbaru "The Scoobinator"	Hopefully the top.

11-15-2012, 11:00 PM	#15
chazly413 Scooby Specialist Member#: 151079 Join Date: Jun 2007 Chapter/Region: MAIC Location: College Park, MD Vehicle: 2005 2.5RS RBP s-techs mad tyte yo	Never mind, I'm an idiot. Disregard my previous statements.