Throttle Noise
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Thread: Throttle Noise

  1. #1
    Riding Lawn Mower A-Breit's Avatar
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    Throttle Noise

    I having an issue with my 2013 Optima 2.4 and hoping someone might have an idea what might be going on. When I tap the gas pedal there is an unusual noise that seems to come from the intake ( like burping ). The noise goes away at higher RPM but the REALLY odd thing is it will only make this noise when I have th AC on. There does not seem to be any change in the overall performance of the engine but the intake sound is very audible.

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  3. #2
    Learner's Permit Unit ZER0's Avatar
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    Sounds like you have an intake leak... Are you sure all hoses are clamped on correctly?

    I have that same model, and have an intake kit, and the removal of the intake resonator results in a similar sound.
    ZER0

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  5. #3
    Riding Lawn Mower A-Breit's Avatar
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    With the intake kit do you only hear this intake noise when the AC is turned on?

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  7. #4
    Learner's Permit Unit ZER0's Avatar
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    No, the noise is only audible under WOT (Wide Open Throttle) conditions. At idle, there is no real difference from stock, maybe a slight growl, but nothing too noticeable if you arent paying attention.
    ZER0

  8. #5
    Your K5 Optima Vendor K5 Optima Store's Avatar
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    I would say you have a leak somewhere in the intake as well!





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