2004 Ford Expedition heat sheild

2004 FORD EXPEDITION
73,000 MILES • 5.4L • V8 • 4WD • AUTOMATIC
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73EDGAR
  • MEMBER
  • 3 POSTS
Check heat sheild no rattle, can it be that a brokeen revit can cause it to sound like a tin can or maybe something else.? lt does it 10 seconds I start the truck and when I turn the truck off???????
Dec 11, 2013 at 5:45 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Take a rubber mallet and tap on the catalytic converter. Sometimes they come loose inside and make noise.

Let me know.
Dec 11, 2013 at 6:02 PM
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73EDGAR
  • MEMBER
  • 3 POSTS
you mean the converter is going bad or you mean the lnside of the heat sheilds?
Dec 11, 2013 at 6:34 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
The inside of the converter can come loose and cause a noise. I believe you already checked the heat shields. If the converter makes no noise, check the muffler too.
Dec 12, 2013 at 5:07 AM