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Thread: 1.8vvt design, noisy @ 3500rpm 70-90mph

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    Default 1.8vvt design, noisy @ 3500rpm 70-90mph

    Excuse a complete novice at troubleshooting (but at least its my first vauxhall after 2 fiestas and 2 foci).

    Essentially the car is very "boomy" when accelerating and crusing between around 75+mph and between 3500rpm and 40000. Its not road noise or what I would take to be a bearing type noise. It increases immediately if the throttle is pressed down, and lessens as soon as it is lightened - unless within 3500-4000rpm. There seems to be a slight vibration in tandem with it (like going over a rough surface). Very evident with all windows closed. Also seems to judder slightly when changing gears mainly 1st and 2nd, but clutch does not seem to be slipping.
    Car is an 06 Vectra Design (10 months old) with circa 15k on the clock. Had it a couple of weeks myself.

    Engine temp sits at just over normal and stays there.

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    Regular Member Gsi3.2's Avatar
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    right, i suggest that the exhaust sytem is checked for any blowing gaskets as a 1st off, then a check of the security of fixings on the air intake hoses...that'd be my 1st long distance guess's..

    come back to us with anything you find.. the more info you give the better we can try to help..

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    thanks, I'll get those checked over.

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    Regular Member leeandjude's Avatar
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    mines the same mate...go on a very smooth road and its more evident...small booming noise from the rear end, i thought it was the wheel bearing but there ok.
    it may be the tyres i suppose, when i got the car it has 3 different brands on! although i wouldnt have done this, i may as well run them down first as i do high mileage and then replace the lot later in the year. im going to change the wheels around too too see if the noise 'moves' elsewhere.

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    worth trying to discount the possibility, mine are new fronts and slighty worn same brand on the rear

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    Some tyres are really strange at speed. The dealer put "Kingstar" tyres on my car when I got it (despite me telling him to leave the tyres that were on it if he was going to put **** on). Those elcheapos made the car sound and handle like a Series Land-Rover. They're now lying in the shed, replaced by a set of Bridgestones I got cheap off EBay. No noise, no crappy handling.

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