ANSWERS: 2
  • No, this is not normal. Yes, the noise can be stopped. Yes, you can take them off, but it's probably a bad idea. Vibrating heat shields are a common problem on modern cars. The vibration can usually be stopped by altering the geometry and/or attachments of the heat shield. My ex's Miata had a vibrating exhaust heat shield that was fixed by wrapping a big hose clamp around it. Similar measures should be effective on your Mustang. Good luck. . . .
  • Does it do it after the car is warmed up?

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