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Rattling noise?

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Old May 14, 2017 | 06:49 PM
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Default Rattling noise?

I've got a base c5, m6.

When the windows are down and I go over a bump, I hear a rattling. It sounds like metal on metal, almost like dangling house keys. I can't hear it when my windows are up. I had the rear sway bar links replaced, adjusted the heat shield and still am having the sound. I took it to a mechanic and he said he can't see anything else that it would be.

Any suggestions?
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Old May 14, 2017 | 07:54 PM
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When I bought my 02 Z06 the person I bought it from told me that the rear exhaust hanger springs would cause a rattle on deceleration... They definitely do rattle on deceleration, and there is a fix on this forum... I just haven't gotten around to it yet.

The noise you described (keys rattling) is almost exactly the noise I hear. I can't say for sure this is the same thing you are experiencing, but hopefully this gives you guidance.

https://www.corvetteforum.com/forums/c5-general/1335263-qui

HTH

John
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Old May 14, 2017 | 08:34 PM
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Thanks for the info, I'll see if that's it.
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Old May 14, 2017 | 08:34 PM
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It could easily be the brake pads are missing the anti-rattle clips. Next time lightly ride the brakes over the bump and see if it stops.
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Old May 15, 2017 | 12:55 PM
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We used to say just turn up the radio
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Old May 15, 2017 | 01:43 PM
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Could, but then I don't get to hear that sweet corsa. knowing it's their is driving me crazy.
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Old May 15, 2017 | 04:37 PM
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If it's cause is mostly bump related, not accel or decel, then my first guess would be either the front (near cats) or rear (before axles by donuts) exhaust hangers. Both are prone to rattle as generally only one is doing the support work, the other free to make noise.
If it is under accel or decel my guess changes to add a third option; the H-pipe jingle.
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Old May 15, 2017 | 05:18 PM
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I should possibly note that when I got the car, it had a corsa axle back. I've since added headers and xpipe, but the sound has always been there.
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Old May 15, 2017 | 05:23 PM
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I had the exact same thing for a couple of months. I finally got underneath the car and noticed that that the 2 bolts you tighten the rear of the H-Pipe into(or X-pipe) were a little loose. I tightened them, but also sprayed silicone spray on the springs they go into. No more jingle sound
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Old May 15, 2017 | 05:47 PM
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Originally Posted by mild83
I should possibly note that when I got the car, it had a corsa axle back. I've since added headers and xpipe, but the sound has always been there.
Did you install the headers? If so did you remove the front hangers with springs? They were jangling on my car. Removed them and had an exhaust shop put in some standard rubber isolated hangers by the rear before the axles.
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Old May 16, 2017 | 12:10 PM
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Originally Posted by grantv
Did you install the headers? If so did you remove the front hangers with springs? They were jangling on my car. Removed them and had an exhaust shop put in some standard rubber isolated hangers by the rear before the axles.
No, I had a shop do the install.
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Old May 18, 2017 | 10:54 AM
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Looks like I ruled out the brake clips last night..
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Old May 19, 2017 | 08:51 PM
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Default rattle

it was a loose rear shock
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Old Jun 6, 2017 | 07:31 AM
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Well, got my new wheels, tires and alignment done last night and that rattle is gone.

im glad it's gone, but makes me nervous thinking about what might've been making that noise while driving.
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Old Jun 6, 2017 | 10:13 PM
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OP> the sound has always been there.

Consider checking the window tracks?
Dealer adjust the window tilt after replacing the weatherstrip, now something in the adjustment path for same rattles when the window is down and I'm on a bumpy road.
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