Torque Converter

2008 Toyota Truck Tundra 2WD V8-5.7L (3UR-FE) Copyright © 2009, ALLDATA 10.10 Page 1 Torque Converter: All Technical Service Bulletins A/T - Torque Converter Shudders TC018-07 REVISED Title: TORQUE CONVERTER SHUDDER Models: '07 - '08 Tundra (6 Speed ATM) November 30, 2007 TSB REVISION NOTICE: ^ January 4, 2008: Production Change Information has been added. Previous versions of this TSB should be discarded. Introduction Some customers may complain about an intermittent shudder when lightly accelerating after an upshift between 20 - 45 mph (32 - 72 km/h) or before a downshift between 30 - 65 mph (48 - 104 km/h) when the torque converter assembly is in flex lockup. Production changes to the torque converter have been implemented to improve this condition. Refer to the diagnostic instructions below to confirm if the torque converter needs to be replaced. Applicable Vehicles ^ 2007 - 2008 model year Tundra vehicles equipped with 6 speed automatic transmission (5.7 L V8 engine) and produced BEFORE the Production Change Effective VINs shown below. Production Change Information Warranty Information Applicable Warranty*: This repair is covered under the Toyota Powertrain Warranty. This warranty is in effect for 60 months or 60,000 miles, whichever occurs first, from the vehicle's in-service date. * Warranty application is limited to correction of a problem based upon a customer's specific complaint. . Use Techstream to take a snapshot when shudder is occurring to confirm if shudder is occurring during flex lockup. 3.2008 Toyota Truck Tundra 2WD V8-5.This TSB does NOT apply.Go to Step 2. Refer to the Technical Information System (TIS) and diagnose DTC(s). Confirm NO DTC(s) are stored in the ECM (SAE term: Powertrain Control Module/PCM). Test drive the vehicle and confirm customer complaint of shudder.7L (3UR-FE) Copyright © 2009. If NO . Configure snapshot as follows: 30 Second Duration Trigger Point at Midpoint NOTE: Refer to the University of Toyota online training class P901C "Techstream InDepth" for information about taking snapshots and graphing snapshots on Techstream. Are there any DTC(s) present in the ECM (PCM)? ^ ^ 2.10 Page 2 Parts Information Required Tools & Equipment Repair Procedure 1. Connect Techstream to the vehicle and perform Health Check. If YES . ALLDATA 10. Automatic Transmission/Transaxle ."AB60EAutomatic Transmission: Automatic Transmission Assembly: Installation" 4WD transmission: Drivetrain . Refer to TSB No. and SLU Solenoid Status "OFF". then the condition is NOT related to torque converter flex lockup and this TSB DOES NOT APPLY Continue diagnosis to identify the root cause for this shudder. 5.Automatic Transmission/Transaxle ."AB60FAutomatic Transmission: Automatic Transmission Assembly: Installation" 6. Refer to TIS.Automatic Transmission/Transaxle . Lock Up Solenoid Status "OFF". and SLU Solenoid Status "OFF". "Transmission Fluid Level". Lockup Solenoid Status "OFF". Adjust the transmission fluid level in the transmission. If the shudder occurs with Lock Up "OFF". 2007 or 2008 model year Tundra Repair Manual: ^ ^ ^ ^ ^ ^ 2WD transmission: Drivetrain .2008 Toyota Truck Tundra 2WD V8-5.10 Page 3 4.Automatic Transmission/Transaxle ."AB60EAutomatic Transmission: Automatic Transmission Assembly: Removal" Drivetrain . to properly adjust the transmission fluid level. then the shudder is related to torque converter flex lockup."AB60FAutomatic Transmission: Automatic Transmission Assembly: Removal" Drivetrain . . TC009-07. Replace the torque converter. Use Data List and the graphing functions of Snapshot to confirm the following data parameters when the shudder condition occurs: ^ ^ ^ ^ ^ ^ ^ Vehicle Speed Shift Status Lock Up Lock Up Solenoid Status SLU Solenoid Status If the shudder occurs with Lock Up "ON". Go to step 5. ALLDATA 10.7L (3UR-FE) Copyright © 2009. and/or transmission damage.7L (3UR-FE) Copyright © 2009. ALLDATA 10.10 Page 4 NOTE: Failure to use WS transmission fluid and to properly adjust transmission fluid level can cause transmission shifting issues. 7.L.I. M.2008 Toyota Truck Tundra 2WD V8-5. "ON". . Test drive the vehicle and confirm the shudder condition is eliminated.