ok so i have a 99 f150 v8 4.6l and i have a random missfire. replaced all of the plugs and it still missfired. so i replaced both coils and its still missfiring. i have had the plug wires tested and they tested fine. is there anyone that can help me out?

 

Replace the plug wires. Use Motorcraft. Did you use Motorcraft plugs?

 

At the front of the motor down at the crank about 7 oclock behind the pulley is the crank rotation sensor.
Make sure that it's seated.
If that goes open, nothing works.