I have a 00 Lincoln LS. Its shakes on idle, and there is also a rattling noise. I took it to get it looked at, i thought it was the catalytic converter, but they said it wasnt and after replacing the flywheel, they didnt know what was wrong with, but offered to replace the whole engine. Honestly, i dont trust them and think there were only looking to get more money out of me. I dont know what to do, Check engine light is on, and im afraid is gonna give up on me one of this days. Please anyone, I need some help.