Sound coming from cattalic

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Aug 6, 2011 | 11:14 AM

juan1101

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From: Houston

Sound coming from cattalic

When car is on idle there this sound coming from the cattalyc convertor like if there something hitting a metal is the cat mest up or what is it

Aug 6, 2011 | 11:22 AM

TommyP

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From: Youngstown, Ohio

Could be heat shielding hitting, is it like a vibrating sound?

Aug 6, 2011 | 11:33 AM

montecarloman

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From: Warranty Chevrolet, Maryland

I've seen the inner collar break @ the welds inside the flex joint.

Aug 6, 2011 | 11:44 AM

N1ckateen

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From: Greenfield, IN

yea it's the thing in ur flexpipe. it is broken. it's only gonna get worse. best solution would be to buy a new downpipe 2.5" catted from zzp.

Aug 6, 2011 | 11:50 AM

juan1101

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From: Houston

Ye it's like a vibrating noise but loud .. It's like if marbles are hittin a metal

Aug 6, 2011 | 11:58 AM

juan1101

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From: Houston

Quote:

Originally Posted by N1ckateen

yea it's the thing in ur flexpipe. it is broken. it's only gonna get worse. best solution would be to buy a new downpipe 2.5" catted from zzp.

Flex pipe is the thing before connecting to the headers right cuz that thing starts shaking when it makes the noise ... And I was thinkin of getting a catless downpipe that will work to right

Aug 6, 2011 | 04:44 PM

87gn06gto07irl

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From: In your girls pants (216)

Quote:

Originally Posted by juan1101

Ye it's like a vibrating noise but loud .. It's like if marbles are hittin a metal

First make sure it's not a loose heat shield. Next, hit the cat with your palm. If it duplicates the noise and sounds like it's coming from inside the cat, it's broken on the inside.

Aug 6, 2011 | 06:20 PM

juan1101

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From: Houston

Quote:

Originally Posted by 87gn06gto07irl

First make sure it's not a loose heat shield. Next, hit the cat with your palm. If it duplicates the noise and sounds like it's coming from inside the cat, it's broken on the inside.

ye i just did that and ye im pretty sure is the cat cuz when i hit it u could hear like if there something loose in there

Aug 6, 2011 | 06:30 PM

N1ckateen

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From: Greenfield, IN

either way just get a new downpipe. yes you can go catless if you want, ur car will just sound very different and if you have emissions testing you'll have to find a way to pass that.

Aug 6, 2011 | 06:32 PM

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juan1101

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From: Houston

Quote:

Originally Posted by N1ckateen

either way just get a new downpipe. yes you can go catless if you want, ur car will just sound very different and if you have emissions testing you'll have to find a way to pass that.

i was thinkin of just putting the same downpipe wen ever i need the emission sticker because the (check engine light) didth turn on