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strange rattle please help!!!

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Old Apr 29, 2006 | 12:27 AM
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Default strange rattle please help!!!

First off my car is a M6 T/A with about 10,500 miles on it. I first noticed it today when i was sitting at a stop light. I could hear a slight rattling noise that would rattle every 2-3 seconds. It seems to me that it has been coming from the center of the car. It only seems to happen when I idle for a little while (10-15 seconds). But it dosent happen every time, just occasionally but i have noticed that it has picked up in frequency. The only mods I have on my car are a lid, smooth bellow, and K&N. Could someone please help me out and tell me what might be going on

Last edited by Optimus_Prime; Apr 29, 2006 at 12:36 PM.
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Old Apr 29, 2006 | 11:44 AM
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Get under the car and check your heat shields for your exhaust.
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Old Apr 29, 2006 | 07:10 PM
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Thanks for the info, I was worried it was some tranny or engine trouble.
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Old Apr 29, 2006 | 08:44 PM
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A metalic rattle from under the car? Like dddd ddddd dddd stops dddd dddd stops etc.
Mine does this too, its an exhaust rattle. I pressed a screw driver against my driver's side exhaust pipe (right under the door) while it was idling and it stopped the rattle while I was holding it against it. I havent had the chance to get under the car and really inspect things yet though.
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Old Apr 30, 2006 | 01:16 AM
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as previously mentioned it sounds like a loose heat shield on the catalytic convertor.
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