This is due to the fact that the impacted vehicle’s torque converter will keep on being locked, thereby choking out an motor at reduce speeds. When the torque converter is defective, it would develop sudden pressures inside the torque converter, which often can induce tough idling. Listen for Uncommon Noises:  https://torqueconverterclutch97418.blogginaway.com/34615069/fascination-about-torque-converter-clutch