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2004 H6-LLBean Outback Wagon
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3 Posts
Discussion Starter · #1 ·
2004 H6 LLBean Wagon with ~121,500 miles.
I've had it since 2005, with ~30,000 miles. Previous owner did all the recommended dealer service.
All the tires match, have less than 5k miles; and all the tires have always matched.
All new brakes/rotors on all 4 wheels, also less than 5k miles ago.
New driver’s side CV joint/axle (NAPA) also earlier this year.

Transmission fluid has been drained and refilled at less than 20k intervals since ~85,000. Gave some issues with wider than usual turns around that time which were then resolved with fluid change and additive.

In the last 6 months or so (at some point after all of the above changes were made), the car will feel like it's almost trying to very very briefly stop only when making LEFT turns... particularly after a stoplight.

It will initially take off fine, but at some point near the apex of the turn and past the apex it will start jerking or try to very very briefly stop, ~1-4 times (variable). Giving more gas makes it a bit worse. Coasting through turns is fine, no symptoms at all.

Happens only when car is at operating temperature and worse on warmer days (upper 80s or 90s). It’s not every left turn, even when it’s warm out and the car is at operating temperature.

There are no codes/no codes pending on the OBD II. (TPS was changed around 2007 or 2008 after getting a code pending).


Duty C Solenoid was replaced ~120,700 miles. This greatly improved issues with turning radius/consistency, which remain improved; seemed to also temporarily improve the jerking issue.

At least before the Duty C replacement, FWD drive fuse would resolve the issue, including (much to my frustration) temporarily upon removal of FWD fuse. Have not retested this theory since Duty C replacement.



Anyone else had mechanical torque bind from the clutch packs while turning ONE direction and not the other?


Anything else to consider since it’s an asymmetrical problem?
 

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'01 OBW 3.0 VDC 184,000 Miles '19 OB 2.5 Base <2,000 Miles - Formerly '14 Impreza Sedan 2.0 5spd 66,000 Miles at trade-in
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330 Posts
My gut is saying it's related to the NAPA axle/joint work. Seems to be around that time when this issue started
 

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Premium Member
(formerly) 03 H6 OBW , (presently) 06 WRX Sportwagon & 2021 Honda CR-V
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18,329 Posts
^^^

left side axle is suspect. Due to ackerman angle geometry, the wheel on the inside of a turn is angled more from centerline than the wheel on the outside of a turn.

check that the inner splined stub is fully seated in the cup - with a pin in place, and is seated in the diff.

I suppose, if you have time and are doing the work yourself, you could swap axles L to R and see if the problem follows.

new aftermarket axles are iffy, aftermarket rebuilts are an even worse risk. Used soob axles from a junkyard, fitted with new cv boots and grease, should give you very long service for a little $$ and some effort.
 

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2004 H6-LLBean Outback Wagon
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3 Posts
Discussion Starter · #4 ·
Definitely seems to be tied to the transmission. The transmission fluid change required by the Duty C work greatly improved the symptoms, and an additional drain and fill with some friction modifying additive appears to have resolved the symptoms for now. Will likely do a drain and fill with friction modifier with each oil change from here on.
 
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