A/T - Shudder In 3rd/4th/5th Gears On Light Acceleration
Number: 16-74-09Date: 03/18/09
Applicability:
2008~09MY Legacy/Outback 2.5L Turbo, 5AT and 3.0L, 5AT
2008~09MY Tribeca 3.6L, 5AT
Subject:
5AT Torque Converter Shudder/Vibration
Introduction
If you encounter a vehicle that has a shudder/vibration which could be felt in 3rd, 4th and 5th gear during slight acceleration, it may be caused by the transmission torque converter during lockup operation. A countermeasure was made to the final machining process of the sliding surface for the lock up clutch to provide more stabilization and eliminate the shudder/vibration.
Countermeasure in Production
The countermeasure torque converters were used in production as shown above.
Part Information / Torque Converter
Repair Information/Procedure
The SSMIII will be needed to record the data while road testing the vehicle.
READ CURRENT DATA
1) On the �Main Menu� display, select the {Each System Check}.
2) On the �System Selection Menu� display, select the {Transmission Control System}.
3) After transmission type information pops up, select [OK].
4) On the �Transmission Diagnosis� display, select the {Current Data Display & Save}.
5) On the �Current Data Display & Save� display, select the {Normal sampling}.
6) Using the scroll key, scroll the display screen up or down until the listed data is shown.
If the shudder is felt within the parameters listed in 3rd, 4th, and 5th gear during slight acceleration, replace the torque converter. Refer to the applicable service manual.
If the shudder is felt outside of the parameters listed, do not replace the torque converter.
Refer to the applicable service manual for diagnostics.
Warranty/Claim Information
For vehicles within warranty, refer the Subaru Warranty Wizard for claim submission information.
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