Guangzhou Meishun Automatic Transmission Co., Ltd.
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"The 4FA040 torque converter is a hydraulic coupling unit with three key functions:
Torque Multiplication: 2:1 stall ratio (approx.) for initial acceleration via stator clutch.
Lock-Up Clutch: Electronically controlled friction disc (engageable above 25 mph) for direct drive efficiency.
Cooling: Integrated impeller circulates ATF to the radiator cooler.
Common Failures:
TCC shudder (P0741/P2714 codes) from worn clutch material
Needle bearing wear causing turbine wobble
Seal leaks leading to fluid contamination
Pro Tip: Always flush the cooler lines when replacing to prevent debris recurrence."
