HELP!! 97 Ford Taurus Won't Start

I Have a problem I Thought I'd Fixed.... Ford Taurus Won't Start No Spark... replaced Coil pack $100 Then it started right up...But next morning it wouldn't start again no spark... What is wrong with this car it is a 6 cyl EFI please help me....

The coil pack needs to be "told" to fire by the Powertrain Control Module (PCM). The PCM determines when to fire the coil based on input from the Crankshaft Position Sensor (CKP) and Camshaft Position Sensor (CPS). I'd suggest you start by checking the signals from those sensors.

-Rod