Diff staying in lock?

Discussion in 'Modifications & DIY how-to' started by wangan_x, Oct 26, 2009.

  1. wangan_x

    wangan_x Member

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    I have an 06 STi

    at low speeds even when I am in open the diff locks. The clunking is really really bothersome/irritating. Awhile back the car threw a NPS code, so I replaced the neutral position sensor, the code hasn't returned, but, the diff is still pretty much staying in lock. I have checked my fluids and they all look pristine as they did when I put them in. I also only use Subaru Gear Oil and Rear Diff Fluid.

    Any help would be greatly appreciated.
     
  2. Alex

    Alex Community Founder
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    Are the ABS lines properly torqued?
     
  3. wangan_x

    wangan_x Member

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    i assume so, I haven't touched em, would that cause the diff to stay in lock even when in Open?
     
    #3 wangan_x, Oct 26, 2009
    Last edited: Oct 26, 2009
  4. kingwrex

    Supporting Member

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    Sounds like the center diff could be binding up. Time for a new center diff.

    If you can put the center diff in any selsection lock to open and it still binds then most likely you have fried your center diff.

    Likely causes are different circumferances in your tires or you have been pulling your e brake.
     
  5. Jake

    Jake Active Member

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    ervin what have i told you about trying to drift that thing?!
     
  6. wangan_x

    wangan_x Member

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    i don't need no stinking ebrake to drift it...

    tires are same size all around... also if its the center diff wouldn't it make sense for the trans fluid to ave shiny pieces in it?
     
  7. kingwrex

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    I could have metal flakes in it or not, depends on how bad it is. Doesnt matter iF tires are stamped with the same size, that doesnt mean they are the same size. Take a measuring tape and measure the circumferance of each tire. They all need to be within 1/4 inch in circumferance if not the center diff will get messed up.
     
  8. kingwrex

    Supporting Member

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    and just because you dont need to use the e-brake to drift doesnt mean you dont
     
  9. wangan_x

    wangan_x Member

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    lol, actually it does... or I don't anyway
     
  10. Alex

    Alex Community Founder
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    Since you asked, loose ABS lines will cause the center diff to wig out. Although, this is more than likely not the cause of your problem.
     
  11. wangan_x

    wangan_x Member

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    interesting... and since you guys don't know me, I don't drift... Grip pwns

    on that note

    is there a way to check the diff without removing the trans? I am lucky enough to have access to a lift, I will also check the abs lines...
     
  12. Jake

    Jake Active Member

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    i think there's a drain pan right underneath it. not 100% on the 6spds. but i remember Will saying when he took the drain pan off my old 5spd chunks just fell out and he could see where the front diff USED to be. but thats the front diff. i assume there would be a similar one for the center diff. i dn
     
  13. wangan_x

    wangan_x Member

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    ok update, the diff is fine, so i am thinking it may be the harness controlling it, the car is also throwing a neutral position sensor code, even though i replaced the NPS. Anyone know anything that could have caused issues with both sensors?

    Oddly enough now when I put it in manual override it stays that way, no locking.

    also does anyone know the resistance that the harness should have?
     
  14. nicad

    nicad Yes I am a troll

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    "i think", "not 100%", "i remember", "i assume", "i don't know"

    if you have no idea why reply?

    you can't get a visual inspection without pulling the transmission. there are two drain plugs, one on the gear side and one on the clutch housing side. there is also a small pan you can pull (it has a magnet) and check for wear particles
     

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