There is a Recall on that problem 07M07
Customer Satisfaction Program - Certain 2003 - 2005 Model Year Lincoln LS and Ford Thunderbird Vehicles Equipped With 3.9L Engine - Extended Warranty Coverage on Ignition Coil Assemblies and on 2003 MY Vehicles Only, Engine Valve Cover Gaskets
This program extends the warranty coverage of the ignition coils to 10 years of service from the
warranty start date of the vehicle or 100,000 miles, whichever occurs first. For vehicles that have
accumulated more than 100,000 miles, coverage will last until November 30, 2008. Coverage is
automatically transferred to subsequent owners.