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Thread: Vibration sound at certain rpm.

  1. #1
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    Vibration sound at certain rpm.

    Took the VW Tiguan on a dirt track, light off-roading.

    Now I can rear a vibration noise in any gear, between 2000-2500 rpm (even in neutral). Above/below this rpm range it's fine. It started right after the car was bumped around. Not heavily, it's an SUV after all.

    I can hear it in the cockpit with doors closed, but not outside or with the doors open.

    There is no jolts or vibrating feeling, it's just a noise.

    Sounds like a bee buzzing madly.

    Any ideas what it could be or help me diagnosis?
    Last edited by anonymousmoose; 12-07-2020 at 08:00 PM.
    VW Tiguan 2018 162TSI Highline
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    I replied to you on WP
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    Vibration sound at certain rpm.

    Quote Originally Posted by Hillbilly View Post
    I replied to you on WP
    Thanks


    It sounds similar to the (except I can't hear it unless I'm in the car with doors closed)
    YouTube
    VW Tiguan 2018 162TSI Highline
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    Interesting development. Noise is not there when the engine is cold. Develops when it gets warm/hot. No signs of overheating
    VW Tiguan 2018 162TSI Highline
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    Quote Originally Posted by anonymousmoose View Post
    Interesting development. Noise is not there when the engine is cold. Develops when it gets warm/hot. No signs of overheating
    Exhaust is likely touching a heat shield. Exhaust pipe expands slightly when hot so makes sense that it wont touch when cold. Pretty common on the Tigs to have rattling heat shields near the exhaust.
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    Quote Originally Posted by anonymousmoose View Post
    Interesting development. Noise is not there when the engine is cold. Develops when it gets warm/hot. No signs of overheating
    Have you gotten any closer to determining what it is?

    Something similar developed in my 162 Highline during a long road trip, has remained in the car ever since.

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    Quote Originally Posted by RaID View Post
    Have you gotten any closer to determining what it is?

    Something similar developed in my 162 Highline during a long road trip, has remained in the car ever since.
    No, only happened yesterday. Booked in Wednesday.

    Why didn't they fix it under warranty?
    VW Tiguan 2018 162TSI Highline
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    Quote Originally Posted by anonymousmoose View Post
    No, only happened yesterday. Booked in Wednesday.

    Why didn't they fix it under warranty?
    I've got a service coming up, will raise it then. It hasn't annoyed me enough to get it sorted sooner

  9. #9
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    Vibration sound at certain rpm.

    [*UPDATE*]

    I canceled VW to look at it.

    Drove the car home, noise was there at the rpm range described.

    Got back to the city, had the car engine cleaned.

    The I sprayed the undercarriage with my jet sprayer. Found an awful lot pebbles in the plastics under the car. Started smacking the plastics to loosen the stones. Jet sprayed what I could (I didn't have a ramp to crawl under the car).

    Sprayed around the radiator to dislodge more leaves. Pushed the noise dampening foam back in. Gave parts of the engine another jet spray.

    Result, no more noise during a 30 mins test drive, doing lots of 2000-2500 rpms.

    If the noise returns, I'll have another look (also planning to get some ramps to lift the car).
    Last edited by anonymousmoose; 14-07-2020 at 06:13 PM.
    VW Tiguan 2018 162TSI Highline
    VW Polo 2015 81TSI Comfortline

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    I’ve heard about rocks in your head, but rocks in your plastic bits!!!
    Ha ha, great to see you got to the bottom of it.
    Nothing more annoying than noises in the car
    2018 Allspace 162TSI R Line

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