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Author Rattling exhaust
David24
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Registered: 26th Aug 09
Location: Essex
User status: Offline
16th Dec 09 at 14:26   View User's Profile U2U Member Reply With Quote

My Corsa sport was fitted with a factory standard sport exhaust box at a garage but it rattles when it warms up. I have taken it back to the garage but they can't seem to fix the problem. Does anyone have any ideas why it rattles when warmed up or has any experienced this before?
scottyp1989
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Registered: 29th Jul 07
Location: Warley, West Midlands
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16th Dec 09 at 14:36   View User's Profile U2U Member Reply With Quote

chuffed cat more than likely, stuff inside is rattling around
David24
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Registered: 26th Aug 09
Location: Essex
User status: Offline
16th Dec 09 at 14:39   View User's Profile U2U Member Reply With Quote

Cat? it was ok when I bought it but the one that was on there blew so had it replaced and has been rattling since. Still think it could be the cat?
davcohen
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Registered: 1st Nov 03
Location: North London
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16th Dec 09 at 14:43   View User's Profile U2U Member Reply With Quote

should be under warranty?
scottyp1989
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Registered: 29th Jul 07
Location: Warley, West Midlands
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16th Dec 09 at 14:46   View User's Profile U2U Member Reply With Quote

ye could be, thats the usual cause anyway unless theres a loose heatshield
David24
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Registered: 26th Aug 09
Location: Essex
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16th Dec 09 at 14:48   View User's Profile U2U Member Reply With Quote

When I feel the exhaust it feels solid and doesn't feel loose so it must be something beyond that then. Or even the manifold?
scottyp1989
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Registered: 29th Jul 07
Location: Warley, West Midlands
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16th Dec 09 at 14:49   View User's Profile U2U Member Reply With Quote

you wont feel if its gone, the stuff inside the cat breaks up and rattles around
David24
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Registered: 26th Aug 09
Location: Essex
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16th Dec 09 at 14:52   View User's Profile U2U Member Reply With Quote

its not the kind of rattling of something moving around. Just sounds like something is rubbing or hitting against something
am4nf
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Registered: 27th Jul 08
Location: South Ayrshire Drives: Corsa Sport
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16th Dec 09 at 14:55   View User's Profile U2U Member Reply With Quote

Could be a loose heat sheild
David24
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Registered: 26th Aug 09
Location: Essex
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16th Dec 09 at 14:57   View User's Profile U2U Member Reply With Quote

Scottyp1989 did mention that, what is a heat sheild and where is it located?
am4nf
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Registered: 27th Jul 08
Location: South Ayrshire Drives: Corsa Sport
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16th Dec 09 at 15:01   View User's Profile U2U Member Reply With Quote

Ahhhh I only had a quick scan and didnt see that

Heat sheilds are metal plates above the exhaust pipes
smcGSI16V
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Registered: 26th May 03
Location: Farnborough Drives: Thurlby 888 CDTi No.98
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16th Dec 09 at 15:06   View User's Profile U2U Member Reply With Quote

Theres 3, one above the back box, one above middle box and one above the cat.

altho I expect that its the baffles that have come loose in one of the boxes or cat.
David24
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Registered: 26th Aug 09
Location: Essex
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16th Dec 09 at 15:31   View User's Profile U2U Member Reply With Quote

Just baffles me as it was fine before I had the exhaust replaced. What would come with the exhaust if it was replaced? does heat shields and cats come with the system. Sorry I don't know too much about this sort of thing
am4nf
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Registered: 27th Jul 08
Location: South Ayrshire Drives: Corsa Sport
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16th Dec 09 at 15:35   View User's Profile U2U Member Reply With Quote

If you had the full system replaced then Nothing inside it should be rattling

They could have knocked a heat sheild tho
David24
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Registered: 26th Aug 09
Location: Essex
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16th Dec 09 at 15:37   View User's Profile U2U Member Reply With Quote

ok, thanks for the advice. I will get a mechanic to check for loose heat shields.
am4nf
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Registered: 27th Jul 08
Location: South Ayrshire Drives: Corsa Sport
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16th Dec 09 at 15:45   View User's Profile U2U Member Reply With Quote

Should be able to look underneath and see yourself
David24
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Registered: 26th Aug 09
Location: Essex
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16th Dec 09 at 15:47   View User's Profile U2U Member Reply With Quote

where would I look?
am4nf
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Registered: 27th Jul 08
Location: South Ayrshire Drives: Corsa Sport
User status: Offline
16th Dec 09 at 15:53   View User's Profile U2U Member Reply With Quote

In the places smc said
David24
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Registered: 26th Aug 09
Location: Essex
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16th Dec 09 at 15:58   View User's Profile U2U Member Reply With Quote

gotcha, cheers

 
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