David24
Member
Registered: 26th Aug 09
Location: Essex
User status: Offline
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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?
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scottyp1989
Member
Registered: 29th Jul 07
Location: Warley, West Midlands
User status: Offline
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chuffed cat more than likely, stuff inside is rattling around
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David24
Member
Registered: 26th Aug 09
Location: Essex
User status: Offline
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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?
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davcohen
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Registered: 1st Nov 03
Location: North London
User status: Offline
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should be under warranty?
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scottyp1989
Member
Registered: 29th Jul 07
Location: Warley, West Midlands
User status: Offline
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ye could be, thats the usual cause anyway unless theres a loose heatshield
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David24
Member
Registered: 26th Aug 09
Location: Essex
User status: Offline
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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?
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scottyp1989
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Registered: 29th Jul 07
Location: Warley, West Midlands
User status: Offline
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you wont feel if its gone, the stuff inside the cat breaks up and rattles around
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David24
Member
Registered: 26th Aug 09
Location: Essex
User status: Offline
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its not the kind of rattling of something moving around. Just sounds like something is rubbing or hitting against something
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am4nf
Member
Registered: 27th Jul 08
Location: South Ayrshire Drives: Corsa Sport
User status: Offline
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Could be a loose heat sheild
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David24
Member
Registered: 26th Aug 09
Location: Essex
User status: Offline
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Scottyp1989 did mention that, what is a heat sheild and where is it located?
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am4nf
Member
Registered: 27th Jul 08
Location: South Ayrshire Drives: Corsa Sport
User status: Offline
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Ahhhh I only had a quick scan and didnt see that
Heat sheilds are metal plates above the exhaust pipes
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smcGSI16V
Member
Registered: 26th May 03
Location: Farnborough Drives: Thurlby 888 CDTi No.98
User status: Offline
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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.
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David24
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Registered: 26th Aug 09
Location: Essex
User status: Offline
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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
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am4nf
Member
Registered: 27th Jul 08
Location: South Ayrshire Drives: Corsa Sport
User status: Offline
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If you had the full system replaced then Nothing inside it should be rattling
They could have knocked a heat sheild tho
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David24
Member
Registered: 26th Aug 09
Location: Essex
User status: Offline
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ok, thanks for the advice. I will get a mechanic to check for loose heat shields.
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am4nf
Member
Registered: 27th Jul 08
Location: South Ayrshire Drives: Corsa Sport
User status: Offline
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Should be able to look underneath and see yourself
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David24
Member
Registered: 26th Aug 09
Location: Essex
User status: Offline
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where would I look?
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am4nf
Member
Registered: 27th Jul 08
Location: South Ayrshire Drives: Corsa Sport
User status: Offline
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In the places smc said
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David24
Member
Registered: 26th Aug 09
Location: Essex
User status: Offline
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gotcha, cheers
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