Torque Converter Stator (One-Way Clutch) Test
NOTE:
Torque converter is a sealed unit and must be serviced as a complete assembly. Perform the following tests to check torque converter condition. Torque converter and transmission cooler must be thoroughly cleaned and flushed if transmission fluid is contaminated.
Insert finger into splined inner race of roller clutch and try to turn race in both directions. Clutch should lock when rotated counterclockwise, and turn freely when rotated clockwise. Replace torque converter if clutch fails test.