Should the solenoid operates effectively, the challenge is most likely from the torque converter alone. When the solenoid will not permit air to circulation, put it within a clean container of automated transmission fluid and electrically cycle it to discover if you can take away any blockage within the solenoid. https://torqueconverterclutch88518.alltdesign.com/what-does-torque-converter-clutch-mean-53404576