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Old 11-25-2012, 05:53 AM   #4
Focus Rookie
Join Date: Feb 2012
Fan#: 95063
Location: Santa Monica, CA
What I Drive: 2003 CD Silver SVT 3 door

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SVTF has a few cheap, thin heat shields down the exhaust in several places. As my SVTF aged, these shields came loose and would vibrate at random time under random conditions, each making a different noise: from hums to outright duck call like noise. Could be that.

Also as my motor mounts went to pasture, I got more buzzes and creaks that would pop up at weird times.
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