Should the solenoid operates appropriately, the trouble is probably in the torque converter alone. In case the solenoid does not permit air to movement, position it inside of a clean container of automatic transmission fluid and electrically cycle it to see if you can remove any blockage within the solenoid. https://torqueconverterclutch31840.prublogger.com/33387580/5-simple-techniques-for-torque-converter-clutch