My 2.4s Sound Different

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08-16-2012, 04:52 PM

tucsondivots

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Join Date: 03-16-2006

Location: Tucson Arizona

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My 2.4s Sound Different

We have a 2006 and 2010 LTs, 2.4 engines. The 2006 has 58K miles, the 2010 has 27K miles. My wife's 2006 engine makes a noticeable "whirring" sound, especially when accelerating that is absent on my 2010. Both get about 27 MPG, but I always notice this when I drive my wife's HHR. Anyone else experience this?

08-16-2012, 05:01 PM

TurboTechRacing

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Join Date: 10-08-2007

Location: Minnesota

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Wear on axles and tranny possibly?

08-16-2012, 06:38 PM

firemangeorge

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Join Date: 12-06-2009

Location: Alabama

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Small crack in the flex pipe?

08-16-2012, 07:57 PM

dixiesHHR

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Join Date: 10-04-2006

Location: Kanab,UT

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does it when the air conditioning is on/off?

08-16-2012, 08:21 PM

IgottaWoody

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Location: Washington State, where it rains

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Similar to what a Japanese bike makes?

08-20-2012, 11:21 AM

tucsondivots

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Join Date: 03-16-2006

Location: Tucson Arizona

Posts: 217

Some interesting inputs -- thanks. It does make a sound similar to a Japanese bike. The 2006 seems to run fine, just very noisy compared to the 2010. I need to confirm but think the sound is there with AC on or off. Seems to shift without issues.