Explorer 2WD V6-4.0L VIN K (2007)
Torque Converter: Testing and Inspection
Torque Converter Diagnosis
Torque Converter Diagnosis
Prior to installing a new torque converter, all diagnostic procedures must be followed. This is to prevent the unnecessary installation of good torque
converters. Only after a complete diagnostic evaluation can the decision be made to install a new or remanufactured torque converter.
Begin with the normal diagnostic procedures as follows:
1. Preliminary Inspection.
2. Know and Understand the Customer Concern.
3. Verify the Concern - Carry out the Torque Converter Clutch Operation Test. See: Torque Converter Operation Test
4. Carry out Diagnostic Procedures.
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Run on-board diagnostics. Refer to On-Board Diagnostics with scan tool. See: Transmission Control Systems/Testing and Inspection/Initial
Inspection and Diagnostic Overview/Diagnostic Strategies/Diagnostics
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Repair all non-transmission related DTCs first.
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Repair all transmission DTCs.
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Rerun on-board diagnostic to verify repair.
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Carry out the Line Pressure Test.
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Carry out the Stall Speed Test. See: Transmission Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Special
Testing Procedures/Stall Speed Test
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Carry out the Diagnosis by Symptom Index. See: Transmission Control Systems/Testing and Inspection/Symptom Related Diagnostic
Procedures/Diagnosis By Symptom
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Use the index to locate the appropriate routine that best describes the symptom(s). The routine will list all possible components that may
cause or contribute to the symptom. Check each component listed, diagnose and service as necessary before servicing the torque converter.
