There's a possiblity your car could be running in what is known as "limp" mode. The transmission and your car's computer system will need to be checked. Best suggestion would be to take it to the dealer and they will check the codes and reflash the software if needed. Good luck!
〉 Answered on Feb 25th, 2013 by Karen Salvaggio, Owner/ Editor Thunder Valley Racing and Professional Race Car Driver at Thunder Valley Racing