# Nast;y noise

**URL:** <https://community.cartalk.com/t/nast-y-noise/37218>\
**Category:** Maintenance/Repairs\
**Tags:** focus, ford\
**Created:** [September 27, 2009, 5:15am UTC](https://community.cartalk.com/t/nast-y-noise/37218 "2009-09-27T05:15:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![obet3016](https://avatars.discourse-cdn.com/v4/letter/o/977dab/32.png) [@obet3016](https://community.cartalk.com/u/obet3016)\
**Post date:** [September 27, 2009, 5:15am UTC](https://community.cartalk.com/t/nast-y-noise/37218/1 "2009-09-27T05:15:03Z")

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my 2000 ford focus has what seems to be a loud rattle in the exhaust system. this noise subsides after car has warmed up.

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**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\
**Post date:** [September 27, 2009, 5:22am UTC](https://community.cartalk.com/t/nast-y-noise/37218/2 "2009-09-27T05:22:32Z")

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Could be a loose heat shield.

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**Author:** ![MG-McAnick](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mg-mcanick/32/188_2.png) [@MG-McAnick](https://community.cartalk.com/u/MG-McAnick)\
**Post date:** [September 27, 2009, 2:42pm UTC](https://community.cartalk.com/t/nast-y-noise/37218/3 "2009-09-27T14:42:02Z")

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Does it come and go with changes in RPM? If so it’s almost sure to be a heat shield. I’d suggest taking it to a locally owned muffler shop, not a chain like Meineke or Midas, because all they will want to do to sell you a new catylic converter or whatever is shielded by the errant shield. A local shop will be able to simply put a tack weld on the shiled to keep it from buzzing. So COULD a chain shop, but it wouldn’t be as profitable for them, so they are unlikely to do it. JMHO from past experience.