no spark

94 mustang v-6, sometimes it wont start, sometimes it will, when it wont start its not getting any fire to the plugs, changed cam & crank sensor, coil pack, & ingnition switch, might be a loose wire but havent found it yet, what else could it be and has any one else had this problem

Does the V-6 persuasion have a TFI module on the side of the distributor? If so, take it off and let your local parts store test it for you. You may have to run to the store first and get a special tool for the removal.

He said coil pack so it sounds like a DIS.