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Old 05-05-2015, 08:57 PM   #1
COSti37
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Member#: 375672
Join Date: Dec 2013
Default 11' Turn Popping white 50/50 Lock

Hey everyone,
I hate posting a new thread, especially if this has been covered, but I wasn't able to come across anything.
My 2011 Sti is "locking-up"/"popping" while turning in 50/50 FW/RW differential ratio (very similar to a 4wd SUV or Truck while in 4wd).

The car was at the Dealership, and the technicians stated this was completely normal for all 11-14 STi's.

The problem is, I never noticed it before. I called a different Subaru Dealership, and they stated this is abnormal.

Does anybody have any input on this? Or has anyone experienced the same issue.

I apologize in advance if this has been covered already.

Thanks!
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Old 05-05-2015, 10:13 PM   #2
Improbus
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Member#: 278439
Join Date: Mar 2011
Chapter/Region: MAIC
Location: Chester County PA, USA
Vehicle:
2011 WRX 306HP/333TQ
1997 Legacy Outback EJ25

Default

Get the center differential checked.

There was a loose needle bearing in my 2011 WRX Transmission that ate the teeth off the input shaft to the center differential.

I had the transmission rebuilt under my extended warranty.

My Thread about the issue: 2011 WRX Failed Center Differential
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Old 05-05-2015, 10:40 PM   #3
Loyale93
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Location: Wingina,Virginia
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1050 Triumph Speed Triple

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Yes, sounds like your DCCD is set to "Lock" even if it's not. This ostensibly puts your car in 4WD as opposed to AWD. Not really, but for this conversation, it may as well be the case.

Get the Center Diff checked out.
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Old 05-05-2015, 10:48 PM   #4
COSti37
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Join Date: Dec 2013
Default

Thank you for responding. The car is going to the dealer that stated this was abnormal in the morning. Hopefully this is a different issue. The car doesn't have a hard time turning in any other setting rather than the 50/50 lock that the sti dccs system offers.
I'm guessing if it was transmission issues this would happen regardless.
I'm definitely going to bring this up to the technicians though. At this point your input is the best I have.
Thanks again.
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Old 05-05-2015, 10:52 PM   #5
needasubie10
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Location: lexington,VA
Vehicle:
2002 wrx wagon
mbp

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My wrx trans sounded the same. Then one day POP! Was still driveable but making all kids of rattling noises. Everything i could find pointed to a diff. Best of luck. I had another swapped in and problem gone
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Old 05-05-2015, 11:06 PM   #6
COSti37
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Was this during all diff settings? I'm not sure how the Wrx's work as far as diff settings.
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Old 05-05-2015, 11:10 PM   #7
needasubie10
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mbp

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It wasnt adjustable like the sti.
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Old 05-05-2015, 11:13 PM   #8
Badler
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What do you mean 50/50 ratio? The ratio is a fixed number. All the DCCD does is essentially lock the axles out in "lock". It does NOT transfer the power from front to rear, etc...

Pro tip: The ratio isn't 50/50.
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Old 05-05-2015, 11:29 PM   #9
COSti37
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Default

Right, it's technically a fixed number so not 50/50. Well when I lock the axels is when the car isnt slipping causing a popping or skipping when turning sharp. It doesn't seem others have this issue.
Thanks for the tip though, Im not not on nasioc often, I just have different dealerships saying different things.
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Old 05-05-2015, 11:47 PM   #10
Badler
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Well, then it's working perfectly. It locks the axles out. If you are turning the inside wheel will/should be hopping. With traction that's going to make the axles pop.

C/N: The outside wheel is traveling further. The inside wheel is trying to travel the same but can't. That's why it hops/pops.
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