Crown Victoria V8-4.6L Flex Fuel (2008)
Torque Converter: Testing and Inspection
Torque Converter Diagnosis
Torque Converter Diagnosis
WARNING: If equipped with fire suppression system, refer to Fire Suppression System for Important Safety Warnings. Failure to follow
this instruction may result in serious personal injury.
Prior to new torque converter installation, all diagnostic procedures must be followed. This is to prevent the unnecessary installation of new or
remanufactured torque converters. Only after a complete diagnostic evaluation can the decision be made to install a new torque converter.
Begin with the normal diagnostic procedures as follows:
1. Preliminary inspection. See: Transmission Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Preliminary
Inspection
2. Know and understand the customer's concern.
3. Verify the condition - carry out the torque converter operation test. See: Transmission Control Systems/Testing and Inspection/Component Tests
and General Diagnostics/Torque Converter Operation Test
4. Carry out diagnostic procedures. See: Transmission Control Systems/Testing and Inspection/Symptom Related Diagnostic Procedures
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Carry out on-board diagnostics; refer to Diagnostics. See: Transmission Control Systems/Testing and Inspection/Initial Inspection and
Diagnostic Overview/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 Line Pressure Test. See: Transmission Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Line
Pressure Test
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Carry out Stall Speed Test. See: Transmission Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Stall Speed
Test
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Carry out Diagnostic Routines. Refer to Diagnosis By Symptom. See: Transmission Control Systems/Testing and Inspection/Symptom Related
Diagnostic Procedures/Symptoms
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Use the Diagnosis by Symptom Chart 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 repair as required before changing
the torque converter. See: Transmission Control Systems/Testing and Inspection/Symptom Related Diagnostic Procedures/Symptoms