knocking sound in Sonata that I cant find





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  1. #1
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    Default knocking sound in Sonata that I cant find

    Ok first question is how do I up load a sound clip from my cellphone.


    AUD-20160505-WA0001


    The swambo-mobile or the broom, what ever you want to call it, is sick. Hyundai sonata 2011
    It is about a month out of warrantee and it sounds like it is falling apart.


    I have had it at the dealer and at Supa-quick nobody can find this clanging.





    I thought the wheels were about to fall off. Yesterday at Supa Quick, while it was on the lift, we "ruk en plukked" at every part of the suspension.


    What other possibilities are left?
    Exhaust?
    How can you check if it is shocks?


    On the Hyundai forums there is mention of many rattles and noises but none that has convinced me yet.
    Last edited by Mal Hannes; 2016/05/05 at 09:02 AM.
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  2. #2
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    Default Re: knocking sound in Sonata that I cant find

    Engine mount, gearbox mount? Shock mounts?

    They won't necessarily show up if you wiggle the suspension.
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  3. #3
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    Default Re: knocking sound in Sonata that I cant find

    when is the sound most prominent or do you hear the noise most often when driving or standing does it change when moving or not

    When stationary obviously engine related or mountings etc.
    When pulling off maybe mountings
    When moving and the sound changes links of sorts due to road stresses.
    Isuzu KB 250 4x4 D-teq OME suspension

  4. #4
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    Default Re: knocking sound in Sonata that I cant find

    Hi Hannes,

    Is the sound at the back or front of the car?

    I bought a Getz 2 months ago, and it has a loud cracking sound coming from the back axle. It seems the sound is coming from the torsion bar, which is mounted inside the axle. Obviously, a previous owner knew about it, going by the inner tube/cable ties repair.
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  5. #5
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    Default Re: knocking sound in Sonata that I cant find

    More info on where the sound comes from will help. which dealer did you take it to?
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  6. #6
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    Default Re: knocking sound in Sonata that I cant find

    Thank you for all the comments guys.


    The sound is most prominent when driving over uneven road on paving or gravel it sounds horrible.
    The sound is only when driving nothing when parked.


    I was convinced the sound is from the right front wheel but if you sit in the passenger seat it sounds like it is coming from the middle of the car, gear lever area.


    I feel like the vw parts advert on the radio.
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  7. #7
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    Default Re: knocking sound in Sonata that I cant find

    maybe the rear engine mounting, can also be stabilizer links..
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  8. #8
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    Default Re: knocking sound in Sonata that I cant find

    Mine happened mostly when entering the driveway diagonally, so I stopped the car in that position and got somebody to rock the car. It took a few attempts at stopping the car in the right position, so that the noise was always there when rocking the car. Then it was quite easy to find where the noise was coming from.

    Perhaps you could try doing the same test.
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  9. #9
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    Default Re: knocking sound in Sonata that I cant find

    If you only hear it when driving rough roads chances are that it can be suspension related or bushes is 99%.

    Just remember that underneath something might look ok and it may not flex by hand, so maybe use a pry bar to give a bit of leverage to put links and bushes under strain.

    Also see of you can't maybe see any chafing or bumping marks, or a rubber that is busy tearing.
    Last edited by bokvirsports; 2016/05/06 at 05:18 AM.
    Isuzu KB 250 4x4 D-teq OME suspension

  10. #10
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    Default Re: knocking sound in Sonata that I cant find

    So eventually found the culprit on this irritating issue.

    Some stabiliser bar wore out and had some play.

    Busy being sorted but now another issue:
    The car chowed brake (grammar nazis i am not sure brake or break) pads. This is my 3rd set in 8 months or 20 000km. So while investigating my Indy finds very uneven wear on brake pads.

    The culprit is stuck calipers and unbelievable quote for parts only is R 11 000.00. So now they have sent the complete brake fitting to engineering shop to try and remove callipers.

    I am not technical and this was explained by the admin lady so I could be complete u derstanding this wrong, still highly irritating.
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  11. #11
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    Default Re: knocking sound in Sonata that I cant find

    Whisky bottel agter die seat is ook moelik om te ID

  12. #12
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    Default Re: knocking sound in Sonata that I cant find

    Quote Originally Posted by Mal Hannes View Post
    So eventually found the culprit on this irritating issue.

    Some stabiliser bar wore out and had some play.
    .
    Is this not the same bar I mentioned in post 4? Is it in the back axle?
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  13. #13
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    Default Re: knocking sound in Sonata that I cant find

    The calipers have a sliding pin that is stuck.Just clean and lube it.
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  14. #14
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    Default Re: knocking sound in Sonata that I cant find

    It is on the front axle.

    The caliper broke off when they tried to unstuck it and it is at an engineering shop now to remove the piece that is stuck.
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  15. #15
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    Default Re: knocking sound in Sonata that I cant find

    After two weeks of driving the ATOS I am getting the Sonata back today.

    Me and Swambo don't fit next to each other in the Atos so she has been sitting in the back.

    When we took Swambo lite to the airport we had to borrow another car.

    So this has been an interesting and frustrating two weeks.

    In the end it did not cost an arm and a leg but the frustration was high.

    Thank you for everybody's contributions
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  16. #16
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    Default Re: knocking sound in Sonata that I cant find

    Perhaps a tip...
    I had an ugly knocking noise ,and wasn't able to establish where / what it was until i replaced the shocks, and realized the front shock - mountings were kaput - this was the knocking sound, since replacing it all... no more noise (mazda 3)
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