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Thread: Automatic, short whiny noise before gear change

  1. #1
    Regular Member astradriver's Avatar
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    Vehicle : Vectra Estate


    Engine : Z19DTH

    Year : 2008

    Default Automatic, short whiny noise before gear change

    My gearbox makes a short whiny (sort of) noise before it changes gear. It's not noticeable unless driving with radio muted and I only can hear it up to third gear, sometimes fourth depending on road noise.

    It doesn't sound to be of mechanical nature as the pitch doesn't increase with revs, it's constant level for a second before it changes gear. Is that something to be concerned about? Last time the car was on Tech2 it didn't show any errors.

    2008 Vectra 1.9 150, 32k miles.

  2. #2
    Regular Member astradriver's Avatar
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    Vehicle : Vectra Estate


    Engine : Z19DTH

    Year : 2008

    Default

    comming back to my old thread as the sound is still there. It didn't worsen or got better over time it stayed the same. As above it's constant pitch and it happens in all gears somwhere close to 2000 revs not below or above. I can't hear it under light load, for example when accelerating downhill or when reving the engine in neutral which makes me thing it's boost related. I also notice some trails of soot being blown (most likely from EGR) onto the heatshield at the back of the engine, nothing major but it's definitely there. All bost pipes seem to be intact. I took a vid with windows down as it's most noticable from outside.


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    My wife's Corsa and my Lexus both make a high pitched whine when changing gear (both auto) but it doesn't seem to be a problem, they've been that way for some time and not got worse. Don't know if my Vectra does it as the whole thing sounds like a bag of nails being a dti

  4. #4
    Regular Member astradriver's Avatar
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    Vehicle : Vectra Estate


    Engine : Z19DTH

    Year : 2008

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    The box is fine, smooth and shifts well. I'm not sure it's actually it making the noise. Maybe I'm just in the denial lol

  5. #5
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    If it's been that way for some time, and not got any worse, I wouldn't worry about it.

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