The Torque Converter Clutch (TCC) mechanically locks the engine towards the transmission by connecting the impeller with the turbine through a wet clutch. On the other hand,  I strongly recommend against ignoring these issues. Driving by using a negative torque converter can lead to more problems and in the end https://lukasmmkhf.blogrelation.com/40206906/the-greatest-guide-to-torque-converter-clutch