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Thread: Car judder

  1. #1
    Super Wammer russ abbott - royds brother's Avatar
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    Car judder

    Anyone have any idea why my car judders, usually in 3rd gear at around 30mph but as soon as i put a bit more power on it goes.

    Car is astra estate 1.6 petrol.
    Have to sell it so want to be able to put problem in description.

    thanks.

  2. #2
    ÜBER WAMMER. m7rso's Avatar
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    If you are keeping it at a constant speed and not accelerating, then it may be 'hunting' for fuel and should be easy to put right with a bit of a tune up. How old is the car.And you need to explain the judder in more detail for a more precise answer..
    I think therefore I Wam
    Aimer une femme qui fait votre âme chanter, votre tête aussi légère comme une plume et rend les fleurs poussent dans votre coeur.

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    Super Wammer russ abbott - royds brother's Avatar
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    Mk 4 r reg 75,000 miles.
    Judder is same as when you let clutch out and not enough revs but not as violent.

  4. #4
    Wammer
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    Clutch slipping? Where's the bite?
    Shoe bombers! Increase your payload by becoming a clown.

  5. #5
    Missing the point florette69's Avatar
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    You can generally eliminate clutch issues by dropping it into fourth or fifth at low speed and accelerating hard. If the revs pick up at a higher rate than your speed increases, then worn clutch plate is the likely suspect. Alternatively it could be a flat spot if it occurs only in certain gears at certain engine speeds. What sort of use does your vehicle have? Predominantly low speed urban driving can be more wearing on a car than long distance motorway journeys.

  6. #6
    Super Wammer russ abbott - royds brother's Avatar
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    clutch seems fine.
    mainly happens in 3rd but have noticed it a tiny bit in other gears.
    mainly local 150 mile a week with occasional hi fi mercy dash around the country.
    Don't have money to get it sorted so will just advertise it with fault.
    cheers all.

  7. #7
    Wammer
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    sounds like a fuelling problem to me. Had a similar issue in the past, was to do with the airflow meter and ecu not talking to each other correctly causing a lack of fuel.
    Not much help I know, good luck sorting it.

  8. #8
    Super Wammer russ abbott - royds brother's Avatar
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    Quote Originally Posted by gthang View Post
    sounds like a fuelling problem to me. Had a similar issue in the past, was to do with the airflow meter and ecu not talking to each other correctly causing a lack of fuel.
    Not much help I know, good luck sorting it.

  9. #9
    Acc shut see Purité North
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    Graham's prolly right - 99 times out of 100 it'll be the ECU in an Astra G. Fellow sufferer here. That said, do make sure the air filter is sufficiently clean, as the whole intake system teeters permanently on the brink of adequacy for some reason...

  10. #10
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    Quote Originally Posted by earlofsodbury View Post
    as the whole intake system teeters permanently on the brink of adequacy for some reason...
    It was probably 1 pence cheaper than a proper induction system
    Shoe bombers! Increase your payload by becoming a clown.

  11. #11
    Admin hifiwigwam's Avatar
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    Quote Originally Posted by earlofsodbury View Post
    graham's prolly right - 99 times out of 100 it'll be the ecu in an astra g. Fellow sufferer here. That said, do make sure the air filter is sufficiently clean, as the whole intake system teeters permanently on the brink of adequacy for some reason...
    vauxhall_3.jpg


    :p

  12. #12
    Acc shut see Purité North
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    Quote Originally Posted by hifiwigwam View Post

  13. #13
    Everything is awesome.... freefallrob's Avatar
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    I used to love my Batman outfit when I was a kid.......that's just made it seem wrong now somehow, thanks sodders

  14. #14
    Acc shut see Purité North
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    Quote Originally Posted by freefallrob View Post
    I used to love my Batman outfit when I was a kid.......that's just made it seem wrong now somehow, thanks sodders
    As a kid - fine, else, how can grown-men in tights and mask who wear their y-fronts on the outside EVER be anything other than RongTM?

    There is a certain honesty to a gay, roller-blading, semi-naked batclone by comparison, I feel...

  15. #15
    Super Dooper Wammer
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    If it is happening as clutch is let back up then could be clutch plate contamination (usually from oil). May be worth checking your engien & gearbox mounts don't have excess play.

    Otherwise it could well be poor fuelling as has been said (could require a service & Airflow meter clean, could be poor mapping by Vauxhall.

    From what you have said it sounds like it is happening when you are labouring the engine at too low revs for the speed yet 30mph in 3rd I would think quite normal (what revs is that?)

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