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2016 Kia Optima
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403 Posts
Discussion Starter · #1 ·
Hey Guys,

Just today I noticed a weird fluttering sound from right front side of engine bay. Can only replicate at about 40 mph when I gently tap on the gas. Almost sounds like a baseball card against bike spokes.
Anyone else experience this or have any ideas?

Thanks!
 

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2011 Kia Optima
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4,217 Posts
How many miles? Take a look at the pulleys to make certain all in alignment.
Had one years ago where the alt clutch let go, the pulley moved outward and was hitting the metal upright, but the belt was destroyed in a hurry.
 

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2016 Kia Optima
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403 Posts
Discussion Starter · #3 ·
Hey Turbonut. Car has 57K on it. Have an appointment with the dealer on Friday, as warranty is up in 2 weeks. Weird how it only does it at 40 MPH when tapping the gas. Will check pulleys as you suggest, although it's hard to see too far down. Thanks for the reply.
 

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2011 Kia Optima
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Normally with only 57k miles the alt clutch should not cause any problems and when the sound is heard with acceleration always think of motor movement. Guess we'll find out later in the week, so let us know the outcome.
 

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2012 Kia Optima
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24 Posts
Hey Turbonut. Car has 57K on it. Have an appointment with the dealer on Friday, as warranty is up in 2 weeks. Weird how it only does it at 40 MPH when tapping the gas. Will check pulleys as you suggest, although it's hard to see too far down. Thanks for the reply.
Do you recall what the issue was? My daughter's car just started this yesterday and its speed dependent like you said not engine RPM. Thanks!
 

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2012 Black SX Prem. & Tech.
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2,596 Posts
Are you able to manually downshift or upshift while maintaining 40 mph and hearing the sound, see if that affects it?

Silly but maybe it's a wind issue, and there is some plastic panel underneath that literally flaps up and down like a baseball card?
 
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