1998 Lincoln Towncar missfire

Question

missfire randomly except on idle, no check engine light or codes,

replaced TPS and MAFS sensors, what next?

Answer 1

Have a bad coil pack or spark plug

Answer 2

it could be a bad pack but if it is doing it randomly you may have to wait until it gets worse to find out what it is.  You need to pay closer attention to exactly when it happens were you accelerating or coasting or turning all that could help pin point what the source of the problem is.