2005 Ford Focus resonating noise while driving not when at standstill

Car: Ford Focus
Year: 2005
Perfect performance and no other problems but get a noise while moving along in drive and on over run almost like a resonating sound. Garage have checked it and can not find problem. It is almost as if there are no rubber mountings on the silencer system.
When you drive the car hard the noise is less and is worse when driving slowly.
Thank you Fleetweld.
Posted: Jun 6, 2008 (15 years ago)
could be the baffles in the exhaust breaking down or even the catalyst internally breaking down but have these checked out first as i wouldnt want you to spend money on replacing these and the problem still be there afterwards so get them checked out by a reputable garage that you can trust
Posted Jun 6, 2008 (15 years ago)

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