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Old 02-15-2019, 10:29 AM   #1
sililis
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Member#: 470464
Join Date: Jul 2017
Chapter/Region: NWIC
Location: Montana
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2006 Impreza Hatch

Unhappy Center Differential Issues?

My 06 WRX is really having it rough. I am experiencing what I would consider center diff issues but would like to have some confirmation before working on it in this terrible weather.

I was first experiencing 'bumpy' and rough turning in tight turns about 5 weeks ago, but silly old me first imagined it was the ps pump on its way out again or possibly low fluid. 3 weeks ago if the car would be parked for even 5 minutes, it would be as if the tires were frozen and I had to break free from whatever was holding them back, which would happen seldom until I had to physically step on the gas to move......big clunk sound

After that it has not happened since, however if I am over 3k RPMs and let off the accelerator there is a grinding sound I believe near the back side of the trans/right underneath the car. Is this the center diff that has ailed my car? And how screwed are the affecting parts?
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Old 02-15-2019, 10:35 AM   #2
rexmix_svx
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1995 SVX
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Quote:
Originally Posted by sililis View Post
My 06 WRX is really having it rough. I am experiencing what I would consider center diff issues but would like to have some confirmation before working on it in this terrible weather.

I was first experiencing 'bumpy' and rough turning in tight turns about 5 weeks ago, but silly old me first imagined it was the ps pump on its way out again or possibly low fluid. 3 weeks ago if the car would be parked for even 5 minutes, it would be as if the tires were frozen and I had to break free from whatever was holding them back, which would happen seldom until I had to physically step on the gas to move......big clunk sound

After that it has not happened since, however if I am over 3k RPMs and let off the accelerator there is a grinding sound I believe near the back side of the trans/right underneath the car. Is this the center diff that has ailed my car? And how screwed are the affecting parts?
It definitely sounds like the center diff is fried, usually it just welds itself together, but if it is completely locked up either the tires or the transfer case will have to give to make turns and hard accelerations. the driveshaft will have to be removed, shift linkage and the t case bolts, the transfer gears and the center diff should be visible and able to be removed
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Old 02-15-2019, 11:22 AM   #3
sililis
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Location: Montana
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2006 Impreza Hatch

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Damn, I was hoping it would be something less time consuming and cost less but it is what it is haha. What are your thoughts on anything else that might be damaged? Do I need to be concerned with metal shavings ending up somewhere?
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Old 02-16-2019, 06:10 PM   #4
sililis
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2006 Impreza Hatch

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UPDATE: Well I managed to diagnose the binding on turns as low fluid, I was dumb and read the max low line and figured that was where it was supposed to be, topped it off and i am good.

As far as the tires binding when I park it, I am at a loss. It has returned and might even be worse than before. I have read that some cars get their P brake stuck because of water but i have experienced this without engaging the hand brake while it is sitting.
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Old 02-16-2019, 11:16 PM   #5
Blackfin
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2010 STi
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My car sometimes gives a decent clunk after sitting for a bit. I think it's the brake pads binding to the rotors through a film of oxidation. Seems to be humidity/weather related and/or related to me having washed the car (so everything's put away wet, prime conditions for the rotors to glaze over with rust.)
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Old 02-17-2019, 02:21 PM   #6
sililis
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2006 Impreza Hatch

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Well I think I might have a different issue, my car was bound up this morning and I managed to give it enough gas to unbind it but my abs light kicked on I am afraid if I keep driving it I might hurt it more than it is but it is my only working vehicle. Any thoughts would be great.

Edit: ABS light is now off and operational, but everything else is f***ed up! I only can come up with the idea of a stuck diff, but no other signs are pointing to it with my limited knowledge that I have obtained through searching.

Last edited by sililis; 02-17-2019 at 02:57 PM.
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Old 02-20-2019, 01:12 PM   #7
FozzyXT08
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Have you considered an issue with the Duty C? Sounds like you experiencing torque bind.
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