Lockup cntrl plunger 09D, TR60

Lockup cntrl plunger 09D, TR60 • Valve • Sleeve • Spring Symptoms: • RPM surge on coast • RPM surge on light acceleration • TCC apply & release concerns • TCC codes Cause: Bore wear at the lockup control valve plunger sleeve results in loss of torque converter clutch control. Correction: Installing the Sonnax lockup clutch control plunger valve kit restores proper clearances, allowing normal operation.