When the solenoid operates correctly, the trouble is probably from the torque converter alone. If your solenoid doesn't allow air to move, place it in the clean up container of computerized transmission fluid and electrically cycle it to determine if you can get rid of any blockage from your solenoid. https://torque-converter-clutch53849.shoutmyblog.com/33400914/the-best-side-of-torque-converter-clutch