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Old 10-14-2016, 10:11 PM   #1
Compt1ga
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Default Shwoop-shwoop sound

Hi friends. My 2008 EOS is making a shwoop-shwoop-shwoop sound. It sounds like it's coming from the accessory drive end of the engine. The warmer the car is the louder it gets. The car is at the dealership and they haven't figured it out yet.

I look forward to your thoughts.
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Old 10-15-2016, 07:57 AM   #2
Batjes
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When is it doing that? Whilst steady driving speed? Or accelerating? Is it worse taking corners? Alse when driving in reverse?
It could be wheel bearing or worn brake or something like that...
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Old 10-18-2016, 06:52 PM   #3
Compt1ga
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Default Shwoop-Scwoop Sound

I hear it best when sitting still. It seems to speed up with engine RPMs. When I'm moving the road noise drowns it out.



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Originally Posted by Batjes View Post
When is it doing that? Whilst steady driving speed? Or accelerating? Is it worse taking corners? Alse when driving in reverse?
It could be wheel bearing or worn brake or something like that...
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Old 10-19-2016, 05:09 PM   #4
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So it is engine only related. That could be components like waterpump, generator, engine itself. How many miles did it run? Is it due to an belt change? I assume it is not clutch related... Those are the things to look into.
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Old 11-06-2016, 08:53 PM   #5
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Sorry for the long delay in following up. The dealership could not determine the source of the sound. It is definitely from the engine. I suspect that it is belt drive related due to the speed at which it occurs. Anything else would happen at a much shorter interval. I'm going to put a mark on the belt and see if it seems to go by at the same interval as the sound
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Old 11-06-2016, 08:59 PM   #6
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The best tool to investigate with is a mechanics stethoscope. Car engines can produce noises from different directions which bounces off hard surfaces making it difficult to locate them. First try a short length of plastic drainage pipe (30-50mm) on your ear to focus the sound, then listen to various parts with the stethoscope. Hope it's not coming from an important belt like a cam belt or the water pump.
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