well iluvmils the car is back up to it's old tricks again. It has been 3 days since I had the tranny service and it is back to shifting strange. It was 32 degrees tonight and I left work and the car was driving along like it was missing or not getting enough fuel. Also the next morning after the tranny service I left for work and when I got to the red light the car was shaking like it was going to die. I left the red light and back to normal. I am also feeling what seems like a miss or and intermittent fuel cut-off as the car nears the shifting stage. Also when I hammer down on the accelerator and it shifts at higher RPMS it still causes that little double shift feeling. When in tiptronic mode it also shifts with the double shift feeling. Could this be a dirty fuel filter or do you still think more along the lines of a TCM or coolant in the transmission fluid. thanks in advance for any response