The torque converter clutch will come into motion to mitigate the inherent inefficiency in the fluid coupling at higher speeds. Although these are generally not all feasible indicators, They can be the most typical ones. Here's a more in-depth listing of the signs of a foul or failing torque converter https://torqueconverterclutch18406.blogaritma.com/32528218/the-best-side-of-torque-converter-clutch