Problem with my 2003 Ford F-150 4.6 L V8.

What is your question?

I am not sure if I am posting in correct place. My husband has a 2003 Ford F-150 with a 4.6 L V8 that has many problems. 1. The Service Engine light comes on. 2. The engine starts missing. 3. The Temperature Gauge goes to hot. 4. Oil light comes on. 5. He put a tester on it and it reads that the #1 Cylinder Misfire Code comes up. What he has repaired so far: 1. Replaced the PCM. 2. Replaced all plugs & all coils. 3. Checked all fuses. It is still doing this. What is causing this problem?