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Old 03-12-2012, 11:07 AM   #15
TheBlack-CyberGray-Pearl
 
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I checked the bolts, they are all very tight. And it's just during the heavy vibration of cold start..

it doesn't really sound like a metal vibration if that makes sense... It sounds like what a loose plastic panel vibrating would sound like, but i'm pretty sure i did't move any plastic pieces...

Any other ideas??? I know this is a hard one to answer because it's defiantly something you have to kid of hear, but i figured that it doesn't hurt to ask.
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Old 03-12-2012, 11:11 AM   #16
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Quote:
Originally Posted by TheBlack-CyberGray-Pearl View Post
I checked the bolts, they are all very tight. And it's just during the heavy vibration of cold start..

it doesn't really sound like a metal vibration if that makes sense... It sounds like what a loose plastic panel vibrating would sound like, but i'm pretty sure i did't move any plastic pieces...

Any other ideas??? I know this is a hard one to answer because it's defiantly something you have to kid of hear, but i figured that it doesn't hurt to ask.
Like u said id have to hear it...its probably something so easy u dont know what it is..check the extensions on the o2 sensora maybe the connectors are hitting something when u start it up? Did u tie them down to somethink? I kbow mine were to loose so i tied thwm down
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Old 03-12-2012, 11:31 AM   #17
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What kind of vibration? is it vibration that's accompanied with rattle, knock, etc.. or just slight vibration only? if is only vibration than that's normal. After header your car will vibrate a little more especially for the first start up and in cold temp.
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Old 03-12-2012, 11:33 AM   #18
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never mind, just saw your post. Just remember that aftermarket headers will be alot noisier vs factory cast manifold. You are probably hearing new engine noise with more vibration which is normal.
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Old 03-12-2012, 11:49 AM   #19
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Yeah, it sounds like its something on the dash/ again/ a plastic part, but i can't figure it out because it only last for about 5 seconds during the begging of the cold start... This is going to be an adventure trying to figure it out.

Thanks for your ideas/ input so far!
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Old 03-12-2012, 07:14 PM   #20
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Did you try to reuse any of the factory heat shields?
If so, make sure there's room around them.
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Old 03-12-2012, 07:39 PM   #21
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Quote:
Originally Posted by usa1camaro1969 View Post
Did you try to reuse any of the factory heat shields?
If so, make sure there's room around them.
Forgot about those...i didnt reuse mine..
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9. You can use automotive jargon and not sound like a total tool
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6. You can't drift in an auto
5. You can't pull fancy moves in an automatic
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3. You’ll never look like a chump if you can drive stick
2. Manual transmission cars are faster
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Old 03-12-2012, 07:40 PM   #22
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+1 on the heat shields...
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Old 03-12-2012, 07:41 PM   #23
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Quote:
Originally Posted by jeffny09 View Post
Forgot about those...i didnt reuse mine..
Neither did I, but I know others have, and had a rattle on initial starts.
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Old 03-12-2012, 07:44 PM   #24
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I left my heat shields off too. More of a pain than anything.
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Old 03-12-2012, 07:44 PM   #25
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I didn't reuse the main ones that go over the headers but i'm going to check the heat shields connected to the factory gaskets. After thinking about it, one of the might've gotten bent in a little bit so hopefully it's that.

Thanks for the ideas guys!
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Old 03-12-2012, 08:27 PM   #26
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Quote:
Originally Posted by TheBlack-CyberGray-Pearl View Post
I didn't reuse the main ones that go over the headers but i'm going to check the heat shields connected to the factory gaskets. After thinking about it, one of the might've gotten bent in a little bit so hopefully it's that.

Thanks for the ideas guys!

That is a good thing to check. I know I had to bend my driver gasket pretty good to clear the headers.
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