2005 Town car runs rough / No Codes

HY Guys,

have a 2005 Town Car with 40 K Miles.

Engine runs rough at most slow rpm's .

No codes and i change : new sparks plugs / new Fuel Filter / new air filter /
New oil / new ATF / good MPG , everything good but runs to rough.

Have an 94 LTC and this car runs better.

Please any ideas ?

THX Oliver

HY Guys,

have a 2005 Town Car with 40 K Miles.

Engine runs rough at most slow rpm's .

No codes and i change : new sparks plugs / new Fuel Filter / new air filter /
New oil / new ATF / good MPG , everything good but runs to rough.

Have an 94 LTC and this car runs better.

Please any ideas ?

THX Oliver

V-8,
If she's running rough @ low rpsm's, the first thing I would check is the coil atop the plugs. Are they all hooked up ? might have a bad one.
Mike

V-8,
If she's running rough @ low rpsm's, the first thing I would check is the coil atop the plugs. Are they all hooked up ? might have a bad one.
Mike

I would also venture a guess that one or more cylinders does not a fully seated plug wire.