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    Thread: Diagnose my Outback's problem

    1. Member MCTB's Avatar
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      10-02-2012 07:07 PM #26
      Quote Originally Posted by dieselraver View Post
      no this is a 6MT which has the true 50/50 viscous coupling differential. no computers or fancy gadgetry to mess with. albeit a bit slower to respond but with true 50/50 AWD i don't care
      Thats probably why it is doing it. Viscous works off of mechanical slippage to lock up. In a turn, one wheel is going farther than the other so you will lock up and get bind. The automatics shouldnt do that since it is electronically controlled. My fiances '12 OB with the CVT does not do that at all.
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    2. Member Pool Runner's Avatar
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      10-02-2012 07:40 PM #27
      Quote Originally Posted by TurboMinivan View Post
      As a Subaru salesman blessed with some actual mechanical knowledge, this sounds like a classic case of the center differential being unhappy with its fluid. When it happens on a Subaru with an automatic transmission, the trick is to get a bottle of limited slip friction modifier and pour it in the diff. This alone will usually cure the problem. If you want to do it the "right" way, have the center diff serviced (read: flush and fill) which is part of Subaru's suggested 30k service.

      However, you have a manual transmission. This means you have the viscous center differential, and the friction modifier trick generally won't affect its operation. Here you'll probably have no choice but to replace the entire viscous unit with a new one. (What causes this to fail? It most often happens after you run tires of different diameters.) The good news is this will be covered by your 5/60 powertrain warranty provided you haven't abused the vehicle. Running tires of different diameters counts as abuse, and Subaru teaches their techs to look for such things when the center diff begins to fail.

      If your tires are all equal, Subaru should be quite happy to replace it for you.
      Can you you help diagnose my 2011 CVT, 2.5i Outbacks problem? is it the same issue, related or different? as I write this my Outback has been at the dealer a week for the third time trying to diag an intermittent problem that occurs when the car sits say overnight or for a period of say two hours or more. With the car cold, start it and let worm up like I normally do 10-15 seconds or more. Put the car in reverse and apply gas as to back out of driveway or such and then the car feels as if the CVT is seriously slipping, following a shudder of what feels like either the parking brake is on or a typical 4x4 left in 4-Lo range while on pavement.

      The problem is entirely intermittent, has happened 8-10 times over the last year, it never does it for the dealer, only happens in reverse. My Subaru dealer cannot figure it out either and I'm getting more frustrated as the issue keeps recurring.

      Forgot to mention, car has 22k miles has been maintained rigorously since new. I have driven it off-Road once or twice but never abused. Otherwise sees commuter highway miles daily via my wife 98% of the time.

      Thanks in advance
      Last edited by Pool Runner; 10-02-2012 at 07:46 PM.

    3. Member lojasmo's Avatar
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      10-02-2012 08:09 PM #28
      change all your fluids.

    4. 10-02-2012 08:48 PM #29
      Quote Originally Posted by Pool Runner View Post
      Can you you help diagnose my 2011 CVT, 2.5i Outbacks problem? is it the same issue, related or different?
      The issue mentioned above only happens when turning very sharply, thus exaggerating the difference in front-to-rear wheel speed (and maximizing the center differential's duty). Your issue, however, seems to have nothing at all to do with the center differential; when you're moving in a straight line, the differential doesn't really need to do anything since all the tires are rotating at the same speed.

      Quote Originally Posted by Pool Runner View Post
      Put the car in reverse and apply gas as to back out of driveway or such and then the car feels as if the CVT is seriously slipping, following a shudder of what feels like either the parking brake is on or a typical 4x4 left in 4-Lo range while on pavement.
      I have never observed this behavior. It could be brake related (I'm just guessing here). When it has happened, did you manually release the parking brake before engaging reverse, or did you just press the gas pedal and let the car then release the parking brake for you?
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    5. Member Pool Runner's Avatar
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      10-02-2012 09:15 PM #30
      Quote Originally Posted by TurboMinivan View Post
      The issue mentioned above only happens when turning very sharply, thus exaggerating the difference in front-to-rear wheel speed (and maximizing the center differential's duty). Your issue, however, seems to have nothing at all to do with the center differential; when you're moving in a straight line, the differential doesn't really need to do anything since all the tires are rotating at the same speed.



      I have never observed this behavior. It could be brake related (I'm just guessing here). When it has happened, did you manually release the parking brake before engaging reverse, or did you just press the gas pedal and let the car then release the parking brake for you?
      Out of habit I & we always do it manually (I don't personally trust that electric brake mechanism) anyway, you just put the car in reverse after it sat. Release brake ofcourse and apply throttle. The car then sudders violently, think of how reversing in a manual would feel like to someone trying to do that for the first time. What's super annoying is that the car only does it 2-3 times in a month, dealer has had car a week while wife & I are on vacation and they say they can't recreate the problem, nor did they fix and denied my wife's clearly blown front passenger side speaker. I feel like Subaru is giving me the shaft with no lube, never mind I'm also less than two weeks into ownership of a new '13 WRX but they don't seem to give a rats that I'm a repeat customer.

      love my WRX, but my '11 Outback 2.5, CVT has been the biggest POS ever, I regret trading my '08 Mercedes R350 for it. At least Mercedes service is always first class.
      Last edited by Pool Runner; 10-02-2012 at 09:20 PM.

    6. Member dieselraver's Avatar
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      10-19-2012 08:42 AM #31
      finally diagnosed the problem. it was the viscous coupler. can anyone tell me more about this part?
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    7. Member dieselraver's Avatar
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      10-19-2012 12:45 PM #32
      Quote Originally Posted by Pool Runner View Post
      Out of habit I & we always do it manually (I don't personally trust that electric brake mechanism) anyway, you just put the car in reverse after it sat. Release brake ofcourse and apply throttle. The car then sudders violently, think of how reversing in a manual would feel like to someone trying to do that for the first time. What's super annoying is that the car only does it 2-3 times in a month, dealer has had car a week while wife & I are on vacation and they say they can't recreate the problem, nor did they fix and denied my wife's clearly blown front passenger side speaker. I feel like Subaru is giving me the shaft with no lube, never mind I'm also less than two weeks into ownership of a new '13 WRX but they don't seem to give a rats that I'm a repeat customer.

      love my WRX, but my '11 Outback 2.5, CVT has been the biggest POS ever, I regret trading my '08 Mercedes R350 for it. At least Mercedes service is always first class.

      have you tried a different dealership? my dealership is fantastic, they fix everything and provide me a loaner (which is very rare in NY)
      Looking for a new or used Volkswagen in NY/NJ/CT? PM me! I offer bottom line pricing! GTI Monster Mats & Gorilla Liner for Sale! http://forums.vwvortex.com/showthrea...la-Trunk-Liner

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