Recently I sent my Camry to the workshop as there was a blown water outlet pipe, and was told that the head gasket was damaged too. These were then replaced, and I took delivery of my car. But my problem seem to have increased as now the car/engine vibrates on idle when in neutral, and sometimes the rev goes below 500 rpm (that too while driving) and the engine dies.
Before sending it to the workshop, my car used to accelerate very well and was fun to drive, but now, there are times that there is no proper pickup/acceleration, and sometimes it just gets to normal all by itself. The garage is not able to solve this for me.