zanetti

Hello everybody. I've spoken many times through this forum about my problems with the automatic transmission(zf 6hp19). Just a month ago i replaced my tired tranny with a used one. very smooth in the beginning. i decided to do an oil change to give a bit more life in it. After that tranny behaviour got worse. Has anybody experienced the car shaking after a gentle accelaration somewhere between 1500 to 2500rpm? it's like something is clogged in the ecxaust.. you feel it like a strong earthquake from underneath. It is very annoying and i believe it is the main reason for creating damage on my tranny. (none obd errors)