This is because of the fact that the affected vehicle’s torque converter will keep on being locked, thereby choking out an motor at decrease speeds. Slippage consumes electrical power during the coupling section. Locking the converter shell to the turbine shaft helps prevent this slippage from occurring. Immediate replacement - https://torqueconverterclutch57899.blue-blogs.com/41291096/the-basic-principles-of-torque-converter-clutch