You will find a problem with the electrical circuit with the torque converter clutch solenoid. Which means the control module (PCM/TCM) can't adequately Management the clutch, meaning the torque converter clutch is both inside a permanent/intermittent locked condition, or open condition or slipping. The torque converter would be the device https://torqueconverterclutch63840.blogthisbiz.com/41098626/the-ultimate-guide-to-torque-converter-clutch