Tranny of torque converter
 

Hello, I'm new to all of this. I'm having an issue and I think its the torque converter but im not sure. Tranny fluid is good and full. Ill let it warm up for 10 or so minutes in the morning and sometimes when I put it into reverse and step on the throttle.....nothing. Then I put it into park and back into reverse and it works. It also seems slow, like there is not instant power. this happened today at a stop sign, up hill. Any ideas?