TL*THE CONTACT OWNS A 2002 FORD CROWN VICTORIA. WHILE DRIVING BETWEEN 55-60 MPH ON NORMAL ROAD CONDITIONS, THE VEHICLE BEGAN TO HESITATE AND VIBRATE. IN ADDITION, THE CHECK ENGINE WARNING INDICATOR ILLUMINATED ON THE INSTRUMENT PANEL AND REMAINED LIT UNTIL THE ENGINE WAS TURNED OFF. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR DIAGNOSTIC TESTING AND STATED THAT THERE WAS AN INTERNAL COIL SHORTAGE. THE MISFIRE CYLINDER 5, COIL PACK, AND SPARK PLUGS WERE REPLACED IN THE VEHICLE. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER ON A SEPARATE OCCASION FOR THE IDENTICAL FAILURE AND THE MISFIRE CYLINDER 7, COIL PACK, AND SPARK PLUGS WERE REPLACED AT THAT TIME. THE FAILURE MILEAGE WAS 67,425 AND CURRENT MILEAGE WAS 68,045. UPDATED 03-27-09 *BF UPDATED 03/31/09.*JB