2005 Subaru Outback Wagon 2.5i Shudders in tight turns with AWD disabled

Jordan Owner/Technician Washington Posted   Latest  
Resolved
Drivetrain
Shuddder
Stutter
Drivetrain

Put the fuse in to disable AWD, low speed studder/shudder remains. Going to drain and refill power steering. Any chance it's the front diff? Only does it when in tight left/right turns. Initially suspected CV Axles, found one with the torn boot. Replaced and feels a little better but now suspect it was a compound issue (with the CV axle driver side being part of it). 

4AT Trans with 2.5L

Any ideas?

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Jared Diagnostician
Maryland
Jared
 

For what its worth, that only electrically overrides awd system. If you suspect transfer clutch system, you may want to to a transfer clutch pressure test just to verify it isnt a physical solenoid or valve. With that fuse in, should be 0psi.

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Laird Owner/Technician
Nova Scotia
Laird
 

I had this exact problem and I flushed the transmission fluid and cycled the AWD clutch pack with the wheels off the ground (put in gear and revved up a bit) a couple times during the flush and it was all good… worth a try

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Sisco Owner/Technician
Vermont
Sisco
 

As long as it doesn't feel like an engine miss, and like the same as driving a 4WD pickup on pavement in the same situation-only happens on tight turns and not straight accel/decel, first make sure that all four tires are same size/brand/model/ wear amount; Subaru's are extremely critical on this. You can always try a few slow figure eights to see if clutches break loose. Mileage? Previous…

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Jordan Owner/Technician
Washington
Jordan
 

98k. No record of any previous repairs. I'm a indie shop that a local Used Car Dealer kicks work to me; this is one of his lot cars. With auctions online right now, car buying is like a box of chocolates! All tires are the same size and wear.

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Troy Owner/Technician
Washington
Troy
 

if the awd clutch solinoid is bad or if the wire is grounded or if the awd hub has heavy groves in it this will still act up but I would do at suggested change the fluid and then try again usually it is the fluid that does this dont pull the pan for the filter as its only a screen but if you do not get satifaction from a fluid flush then you may need to pull the pan

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Sisco Owner/Technician
Vermont
Sisco
 

Yeah, the trans filter is a screw-on type on left side of trans.

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Troy Owner/Technician
Washington
Troy
 

Just making sure seen many people tear the pan off thinking they are going to find a plugged filter thats all if the fluid change does not fix it then sometimes if the pan is indented due to wrong jack placment they can pinch the wires and cause the judder ususally one or two fluid changes fixes your issue

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Stephen Technician
Tennessee
Stephen
 

How about a tube of torque converter shudder fix as a quick test?

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Victor Owner/Technician
Florida
Victor
 

Check for faulty shock mount bearings.

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Jared Diagnostician
Maryland
Jared
 

An article worth reading if you dont have this one nailed down yet. sonnax​.​com/tech_resources…

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Jordan Owner/Technician
Washington
Jordan Resolution
 

Dealer sold vehicle as is, no resolution.

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Resolution Ð Awarded