Front End Clunk - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Problems and Service Talk about any mechanical problems you are having

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post #1 of 28 (permalink) Old 05-02-2010, 11:16 AM Thread Starter
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Front End Clunk

It's not on every bump. It happens mainly over sharp bumps and if there are ripples in the road. It's a muffled rattle/clunk for lack of a better description. Got underneath it today and checked sway bar links and control arm bushings. All look good. Motor mounts look good. I had the DS CA bushing replaced when I first bought the car a month ago but the noise persisted. Do these cars' struts have a bad reputation of going bad quickly? I tested the struts by pushing down on the car and letting it go and it hops up and stops. Theres 46,000ish on the car. I did search but didn't find anything that I could really relate to what I'm hearing.

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post #2 of 28 (permalink) Old 05-02-2010, 12:02 PM
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I think I have the same problem. I've got a 2005 Cobalt with 69,000 miles, and I also hear a sort of dull thumping sound under the car sometimes when I drive. It isn't the engine, and instead I get the feeling something is loose. When I'm driving over somewhat rough roads, and a lot of times when I make somewhat sharp turns, there will be a thump from underneath the car.
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post #3 of 28 (permalink) Old 05-02-2010, 12:21 PM
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the most probable thing would be control arm bushings but you seem to think it's not that. so I'm not sure. sorry I'm no help as of yet haha
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post #4 of 28 (permalink) Old 05-02-2010, 12:54 PM Thread Starter
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HAHA! It's all good. When I inspected them, neither one was "falling out" as it is usually described. The new DS one looked exactly like the PS. I'm thinking it may be the struts but 46,000 miles seems too soon for them to go bad.

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post #5 of 28 (permalink) Old 05-02-2010, 01:02 PM
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Have you inspected the struts? is there any fluid leaking down them?
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post #6 of 28 (permalink) Old 05-04-2010, 08:53 AM
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Could be the exhaust system rattling. Some GM's are known for that.
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post #7 of 28 (permalink) Old 05-04-2010, 10:22 AM Thread Starter
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The struts do look a little moist. Nothing exceptionally bad but that is what made me start thinking it could be the struts. I noticed it when I had it up on jackstands and the wheels were hanging free.

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post #8 of 28 (permalink) Old 05-04-2010, 04:11 PM
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if there is fluid coming down the sides of the struts that means they are leaking and blown out. don't know if that's your clunk noise though lol
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post #9 of 28 (permalink) Old 05-04-2010, 04:54 PM
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all new gm cars have a huge problem with struts blowing out... base line cobalts being at the top of the list... so that very well can be the problem



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post #10 of 28 (permalink) Old 05-04-2010, 05:35 PM
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Quote:
Originally Posted by blazerlow View Post
if there is fluid coming down the sides of the struts that means they are leaking and blown out. don't know if that's your clunk noise though lol
What if there is only a lil fluid/moisture on them?? Is that ok (I thought I read somewhere a little moisture was normal...) or does it mean they are starting to go??
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