HELP! What Does This Noise Mean? - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 24 (permalink) Old 03-03-2013, 02:19 PM Thread Starter
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HELP! What Does This Noise Mean?

I've had this car for a few weeks and just noticed this noise.
It sounds like if you tapped 2 pennies together over and over.
Seems to be coming from somewhere around the air filter.

Doesn't SEEM to increase with pressing the gas pedal.
Just steady ticking.

Maybe its just an exhaust leak?!

I have a video with sound of the noise. Kind of hard to hear BC it was windy out.

I just want to know what the sound is.

Please, someone help me. I would really hate this to end up being a collapsed lifter or something.
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post #2 of 24 (permalink) Old 03-03-2013, 02:24 PM
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First off welcome!

Secondly if it was a collapsed lifter it would get faster with the faster the engine rpms go, and most lifters re-inflate themselves if they collapse.

What kind of Cobalt is it? That will help us to determine what the sound could possibly be. Give us the year of it as well as the trim (LS,LT,Sport,SS NA, SS).

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post #3 of 24 (permalink) Old 03-03-2013, 02:36 PM Thread Starter
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LS 2.2


Its an 06.
Sorry forgot to mention that part...

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post #4 of 24 (permalink) Old 03-03-2013, 02:54 PM
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Is it your heat shield expanding?

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post #5 of 24 (permalink) Old 03-03-2013, 02:57 PM Thread Starter
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https://www.youtube.com/watch?v=vHsA..._gdata_playerf

Here's the video I took.

---------- Post added at 04:57 PM ---------- Previous post was at 04:56 PM ----------

How fo I tell if the heat shield is expanding

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post #6 of 24 (permalink) Old 03-03-2013, 02:59 PM
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Video is not public...

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post #7 of 24 (permalink) Old 03-03-2013, 03:02 PM Thread Starter
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Should be now.

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post #8 of 24 (permalink) Old 03-03-2013, 03:10 PM
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Not the heat shield for sure... That to me sounds like one of the chain guides. Which chain is hard to tell. Take it to a local shop, where they can put a stethoscope on the cover and try to figure it out.

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post #9 of 24 (permalink) Old 03-03-2013, 03:30 PM Thread Starter
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Awesome! Thanks

Any other possible causes?

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post #10 of 24 (permalink) Old 03-03-2013, 03:41 PM
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Hard to tell from that sound clip, but for sure it could your alternator, A/C compressor, Serpentine idler, serpentine or a lot of other stuff, that's why it is best to get it diagnose by a technician or a good mechanic.

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