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Thread: humming noise over 30mph, HELP!!!

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    Default humming noise over 30mph, HELP!!!

    hi all, i have a humming type of noise when going over 30mph, sounds like it is comming from the o/s/r but cant say for sure, i have just replaced the front and rear brake pads, as the backs were very low, so i know for sure its not the low pads causing the noise, i have also had the car jacked up and checked for play in the rear wheels there is none at all, the noise doesn't change when going round a left or right hand corner, it is there al the time from 30 mph upwards, the car has 2 new tyres on the front, but the rears are a little low, but i wouldn't expect this kind of noise just from a little low tread on the rear tyre's, any idea's or tips would be great as this noise is driving me mad, other than this noise the car drives 100%. hope someone can help, cheers all.....

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    Regular Member Steel's Avatar
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    Vehicle : Vectra

    Trim : Sri

    Engine : Z19DTH

    Year : 2005

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    Despite the fact that the noise doesn't change when cornering it could still be the wheel bearing. I have never had one apart on the Vectra C but my guess is that it is probably a double row roller bearing (somone will probably be able to confirm this or declare me a fool!), damage to one of the tracks would still cause the humming noise but would not necessarily change when you turned a corner.

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    the only thing that i am confused about is that at say 60-70mph the noise seems to go alot quieter, if it was the wheel bearing wouldn't it get louder?

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    Regular Member Steel's Avatar
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    Vehicle : Vectra

    Trim : Sri

    Engine : Z19DTH

    Year : 2005

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    Not necessarily, if the damage was on the bearing track as the speed got up the pitch could increase to a less audible level, it might drive your dog wild if he was sat in the back though lol.

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    yes i see what you mean mate, but what about the play in the rear wheels, i have no play at all so i have ruled out the rear wheel bearings?

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    Regular Member Steel's Avatar
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    Vehicle : Vectra

    Trim : Sri

    Engine : Z19DTH

    Year : 2005

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    If there is just damage on the bearing track there would be no play in the bearing, just noise as the ball bearings roll over the damage.

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    the bearing is complete within the hub on the vectra c, and i cant just change the bearing, so i think i will have to look into it a bit more before changing the hub as there no cheap at around £100 a side.

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    Vectra-C Obsessed Poster Drinky's Avatar
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    Rear wheel bearings are a common failure on the veccy and the noise you can hear does sound like one they are a sealed unit complete with abs/traction control sensor and hub flange and they are not cheap about £150 from VX but fairly straight forward to change as you dont need to press any bearings in or out just unbolt old and pop new hub back in

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    noise travels ona a car and may not be on the rear at all, my guess is the tyres on the car. not uncommon to find atyre making a humming noise at certain speeds dissapearing at higher speed's.
    just put my spare wheel on my car and this does exactly the same as you describe, took the tyre off and noise gone.

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    Ex Vec-C Admin & Founder GARY3306's Avatar
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    Quote Originally Posted by whatthevecisup View Post
    the only thing that i am confused about is that at say 60-70mph the noise seems to go alot quieter, if it was the wheel bearing wouldn't it get louder?
    Yes it would

    Quote Originally Posted by whatthevecisup View Post
    yes i see what you mean mate, but what about the play in the rear wheels, i have no play at all so i have ruled out the rear wheel bearings?
    Just because there is no play, doesn't mean the bearing isn't rough. I would lay money on this being a wheel bearing.
    [SIGPIC]VX<font color=Red>R</font> with added Courtenay <img src=https://www.vectra-c.com/forum/images/smilies/biggrin.png border=0 alt= title=Big Grin class=inlineimg />

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