I'm having symptoms of a failing torque converter but no codes r being thrown

Hello, your concern as described is hard to figure -- your torque converter is going to engage on cruise or extremely light throttle at about 35+ mph. Once engaged it locks in to maximize efficiency. Typical concerns with torque converters are shuttering and vibration. I've not heard much about a torque converter causing lack of power and acceleration. If your engine speed (RPM's) are going high but you are not accelerating, you could have a transmission concern. If your fluid is not clean - I'd recommend a fluid change regardless of concern or theory. "Throw a code" -- not all concerns generate diagnostic trouble codes (DTC's). But, torque converter clutch issues and engagement issues would very much trigger a code if they were off concern. www.repairpal.com/repair-shops

Actually the symptoms are more indicative of an ignition misfire. A good quality scan tool with misfire data would be invaluable.