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  #1  
Old 09-11-2008, 10:02 PM
Hatterasguy's Avatar
Zero
 
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Location: Milford, CT
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Rattle driving me nuts...

Their is a slight rattle coming from under the SDL, but it doesn't do it all the time. Only does it at idle, soon as the rpms come up it smooths right out. It sounds like a shot cat, but I don't think anything is under there except for a resonator.

Any ideas? Saturday I might put it up on jackstands and poke around. I might wait for it to get worse.

Is there some sort of cat under these things? I think just in the downpipe thats it. If their is its getting cut out.

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  #2  
Old 09-11-2008, 10:32 PM
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Might try your muffler hangers.
I got a little rattling from one of those being shot once.
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  #3  
Old 09-11-2008, 11:02 PM
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I think you've got a flex type joint aft of the turbo that connects to the main exhaust? The clamp holding that joint together can rattle.
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  #4  
Old 09-11-2008, 11:31 PM
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Good luck. I just fixed my nagging rattle that's been bothering me since I bought it.

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  #5  
Old 09-12-2008, 08:42 AM
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Quote:
Originally Posted by UriahT View Post
Might try your muffler hangers.
I got a little rattling from one of those being shot once.
That was the cause of mine.
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  #6  
Old 09-12-2008, 09:53 AM
1986 300sdl 1985 380se
 
Join Date: Aug 2005
Location: West Monroe LA
Posts: 484
Look at your shifter rod bushings under the car. My sdl made a horrible rattling sound and I found both bushings completely gone and the shifter rod just rattling in the holes where the bushings reside.


John
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  #7  
Old 09-14-2008, 12:57 PM
Hatterasguy's Avatar
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I doubt its those rubber doughnut things, I changed all of them a couple of years ago.

Sounds like it could be that clamp, that would make sense. If I lay under it and poke around enough I'll figure it out.
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  #8  
Old 09-14-2008, 08:35 PM
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I had a rattle when my downpipe-flex pipe was failing. It began rattling, then it just broke apart, and sounded like a drag racer. I had figured out the issue at that point.
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  #9  
Old 09-14-2008, 09:17 PM
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I'm not to worried, if I can't find it...eventualy it will fail, and than I will!

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-Thomas Jefferson
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