I think the torque converter in my 2001 Toyota Corolla is having issues during low speed bumper to bumper traffic the transmission would slip slightly. I say it’s the torque converter because off throttle I feel the torque converter would disengage but when I go accelerate it would slip slightly.
I tried to change my driving style and ease on throttle very carefully and it would won’t slippage but I’ll be moving very slowly because of it. One time went to merge in a lane in the city with heavy traffic so it evoled alot of creeping the tranny didn’t drop a gear instead the engine revved up and it felt like it shifted up or torque converter locked up suddenly this caused the whole car to shake when it happend. The transmission would shift fine after when driving on the highway or 30 or 40 MPH city speeds.