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Thread: just had car at garage....

  1. #1
    Regular Member chrissri82's Avatar
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    Default just had car at garage....

    because of a slight hesitation when trying to drive 'economically' through the early gears. the car seems to very slightly kangaroo.
    also when changing gears the revs dont drop for a second or so and changing gear and means you have to catch it perfect every time.

    anybody else have this on there 1.8 vvt?

    garage tech2'd it and updated software apparantly.

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    I found this in 1st to 2nd and 2nd to 3rd when trying to drive eco in my 1.8..... is it a problem that need's tech2ing?

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    Regular Member chrissri82's Avatar
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    meant to add, the mechanic advised that the revs staying up is the way the car is designed to run to aid gear change.

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    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

    Default

    TBH the 1.8VVTi needs revs. It's just the way that a variably timed engine works. You may find that you actually get better economy just driving the car normally

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    Full Member spennny's Avatar
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    Quote Originally Posted by chrissri82 View Post
    meant to add, the mechanic advised that the revs staying up is the way the car is designed to run to aid gear change.
    Is the 2.2 Direct also designed this way, ??

  6. #6
    Regular Member Exclusive BV's Avatar
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    I find the same with mine you have to time the gear change/revs perfect every time.

    Did the garage actually change anything then?

    What are the results?

  7. #7
    Regular Member chrissri82's Avatar
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    Default

    the garage said they updated the software.
    i also done the air box mod yesterday while changing headlights and sidelights and the hesitation doesnt seem to be there at the moment but revs staying up is still the same.

  8. #8
    Regular Member Exclusive BV's Avatar
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    My revs dont stay up like yours though.

    They just drop back like any normal car between the gear changes.

    When I first got the car, i noticed that the 'Fly by Wire' throttle was very laggy and i coud'nt blip the trottle because of the delay.

    It seems to have speeded up a lot now i've had a chance to blow out the cobwebs

  9. #9
    Regular Member crespo's Avatar
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    I had this exact same problem on a Focus i had. Took it to many mechanics who either said it is designed for the revs to raise slightly when changing gear to aid gear change or to burn excess fuel because of emissions regulations.
    Both scenarios turned out to be mechanic talk for we dont know why it is doing it.
    So i took the situation in to my own hands and made an educated guess and changed the throttle position sensor (pretty cheap and easy to fit) and guess what problem solved.

    My symptoms were the revs would raise by 1 or 200 rpm when changing gear and would be worse when changing gear when driving enthusiastically.
    Which resulted in having to delay the gear change for the revs to drop so i didnt look like a learner driver.

    Oh and any hesitation is likely to be the MAF sensor. Unfortunately these dont throw error codes when they are faulty so are hard to diagnose.

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    Regular Member Rebellion8878's Avatar
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    Two astra's and my vectra slighty rev when changing gear so I presume it was normal and I also found my 1.8VVT is more eco driving it between 2k-3k rpm than 1.5 and used more fuel cruising at 30 in 4th than 3rd doing more revs.

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