We were driving the Lincoln one day and everything was running perfect it started to overheat..We got it home and it hasn't run right since...We put 3 new coils on it and it still wasn't right. We had it put on the Computer it said Ignition Coils A & F were bad.We bought 2 more coils and it still doesn't run 100% Could you please help me.. Or tell me the firing order of the car? Its a 2000 Lincoln Ls