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Rattling cAT 

 

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 Post subject: Rattling cAT
Posted: Mon Oct 17, 2005 11:09 pm 
Getting Side Ways
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Age: 31

Posts: 772

Joined: 24th Mar 2005

Ride: EL FAIRMONT GHIA 97

Location: Perth Floreat
WA, Australia

MY cat rattles like crazy when i turn my car on and when the idleing drops below 500 and when i pull up to the lights, anmd what have you, any suggestion on what i might have to do to stop this??


thankz kyle

 

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Posted: Mon Oct 17, 2005 11:23 pm 
Getting Side Ways
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Age: 28

Posts: 4305

Joined: 6th Jul 2005

Ride: BA xr8 Magnet ute

Location: Melbourne
VIC, Australia

i have the same problem with mine. only does it on start up for about 5 secs. i was just thinking that its most likely stuffed. the guy at the exhaust shop i went to said cats last for s**t all kms.
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Posted: Mon Oct 17, 2005 11:28 pm 
Getting Side Ways
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Ride: 2009 FG XR6 Sedan

Location: Melbourne
VIC, Australia

the cat could be eaten out inside or the tin sheilding could just be ratling. with the car running push on the sheilding (NOT WITH BARE HANDS) and see if it helps.
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Posted: Mon Oct 17, 2005 11:32 pm 
Getting Side Ways
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Ride: E39 523i / EF Fairmont

Location: Brisbane
QLD, Australia

Is this kind of thing a problem? My exhaust sounds rooted too, and Kmart told me it's rusted inside.

 

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 Post subject: ..
Posted: Mon Oct 17, 2005 11:35 pm 
Getting Side Ways
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Age: 31

Posts: 772

Joined: 24th Mar 2005

Ride: EL FAIRMONT GHIA 97

Location: Perth Floreat
WA, Australia

ive been told it happens if the cat is welded to teh exhaust and bolted tight as a Mot*er F*#ker. but not sure if its true!

 

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Posted: Mon Oct 17, 2005 11:50 pm 
Stock as a Rock
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Joined: 8th Oct 2005

Location: Perth
WA, Australia

welding of exhaust around area of cat, bottoming the cat out on something, and just old age wear the cat out. Most places will try and quieten it down by putting dents in the cat with a hammer to close the room it has to move. Easiest way but not the cheapest is to replace it with a new one. You can knock the guts out which is HIGHLY Illegal, but have seen it done. After market sports systems are quite easy to do, factory ones a little harder due to the bend in pipe. Other wise put up with it as it will eventually work its way out the back.
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Posted: Tue Oct 18, 2005 4:42 pm 
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Joined: 7th Jul 2005

Location: canberra
ACT, Australia

same with mine. Had an annoying rattle on start up and idle. Ended up that the cat and mufflers were starting rust out
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