My car is bad. When the tranny switchs gears it revs then continues it sounds as if I am driving a 5 speed. It happens everytime. I don't know know whats wrong with it. Its an automatic Civic DX 96. I have been told the cat might be plugged or the intake manifold could be cracked. The servive light turns on when I drive around 30 miles per hour. Any help would be grand. Thanks again.