hi my focus has a rattle at the front its not from the engine but that area like somthing vibrating worse when hot is a heat shield maybe not always there thanks for any help thanks mike

I had a vibration and took it to the garage. My heat shield needed replaced and it has now stopped. Hope this helps.

I had the same problem, everytime i started the car/going over bumps the heat shield would rattle, so i got under my car & found that the heat shield came loose so i just cable tied it back.
No rattleing what so ever, sorted