In the event you detect the transmission slipping, as in failing to succinctly step through the gears, a failing torque converter can be the cause. It is going to experience like the power starts and sputters while you accelerate. This is a aspect beyond what a simple fluid coupling gives, https://torque-converter-clutch50480.ltfblog.com/32938431/a-secret-weapon-for-torque-converter-clutch