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Thread: Auto Gearbox-poor shifting

  1. #1
    Regular Member millard2004's Avatar
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    confused Auto Gearbox-poor shifting

    Anybody got experience of sluggish/jerky shifting with the 6 speed auto box?
    Mines a 2.8T and has been fine but now seems very sluggish from first pull away when cold and slowing down from motorway speeds on the exit ramp it changes down really clunkyly when braking to stop?
    Any thoughts?

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    Regular Member BYGino's Avatar
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    I've noticed mine isn't as smooth as it was when I first got it too. But then the ATF is due a change - could be the same for you?

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    Regular Member millard2004's Avatar
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    How often does the transmision fluid need changing? I wondered if it was short of fluid?

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    Regular Member BYGino's Avatar
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    If I remember correctly (haven't confirmed this) it's every 4 years or 80,000 miles. I should have done mine at the last service but after all the hassle with the oil filter, I thought I'd skip it. Now I think it's badly needed.

    I could be a bit low. I think there's a how to on here somewhere.

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    Regular Member BYGino's Avatar
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    DP Gremlin again.

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    North West Regional Organiser paulvectrac's Avatar
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    Vehicle : vectra

    Trim : vxr

    Engine : 2.8 v6 turbo

    Year : 2007

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    vx say they are sealed for life uttter rubbish well worth changing it
    Vectra vxr custome remaps egr deletes dpf and diagnostic work all remaps are custome bench tuning avalible all genuine equipment PM for info

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    Quote Originally Posted by millard2004 View Post
    How often does the transmision fluid need changing? I wondered if it was short of fluid?
    Bear in mind if you just drop out what's in the pan you will only be changing half the ATF. If you want to avoid any problems with your transmission, change the ATF every 2 years.

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    Regular Member millard2004's Avatar
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    confused

    What do you mean "only half the fluid" ?...by the way I like the sound of your exhaust mods,whats the Miltek look like at the rear end?
    Last edited by millard2004; 21st February 2012 at 23:16.

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    North West Regional Organiser paulvectrac's Avatar
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    Vehicle : vectra

    Trim : vxr

    Engine : 2.8 v6 turbo

    Year : 2007

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    Search my name mate there is some piks of it before and after had new tips put on aswell
    Vectra vxr custome remaps egr deletes dpf and diagnostic work all remaps are custome bench tuning avalible all genuine equipment PM for info

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    Quote Originally Posted by millard2004 View Post
    What do you mean "only half the fluid" ?...by the way I like the sound of your exhaust mods,whats the Miltek look like at the rear end?
    The auto's hold about 7.5 - 8 litres of ATF. By draining what's in the oil pan you only get about 3.5 - 4 litres out. The rest is trapped inside the torque converter. The only way to change all the fluid is by pumping it out with the engine running.

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