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  1. #1
    VXRed
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    15th September 2015
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    166

    Default Please help diagnose long term issue (going mental)

    I've had a burg for about 4 years, maybe a bit more and for at least 2 of those I've had an issue with the driving dynamics.
    When I turn left, making the car lean on the right side with load, the car understeers. The same is not true when I turn right.
    This issue has been plaguing my enjoyment of an otherwise excellent car and that makes me sad every time I think about it.
    I've been multiple times to the dealership and they always come back with it's fine except it isn't...

    Things I've noticed:
    - When maneuvering the car with full lock to the left side, sometimes the right wheel will skip and make the car shake.
    - The right wheel is losing traction in such a way that it didn't used to because the LSD prevented that, like when cornering full lock to the left and accelerating from a standstill.
    - Under heaving breaking the car ALWAYS veers right.
    - I think there's a slight knocking if I turn the wheel left and right continuously while stopped.
    - I think I'm experiencing more vibration in the cabin and I can sometimes see the right side windshield wiper arm vibrating a fair bit.

    Things I've done:
    - Had new shocks 20 000Km ago, changed nothing.
    - Went into a specialist that changed something in the shocks and said that if they were the issue then it would be coming from the left now, it's still on the right corner.
    - Recently installed new clutch and flywheel (just fyi, as this particular detail seems irrelevant to the case).

    What can this be?
    - Is the LSD broken?
    - Can this be the tie-rods and tie-rod ends?
    - Suspension arm?
    - Engine/gearbox mounts?

    Mind you I've tried asking them to check the last 3 things but not the LSD, I don't know how thoroughly they've checked by they always report everything being fine...

    Please help guys, I really want the car to go back to being the awesome cornering machine it really is. It seems kind of pointless to have a car like this without being able to enjoy it properly.

  2. #2
    VXRed srihaggis's Avatar
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    22nd June 2018
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    84

    Default

    The only thing I can help you with is the braking to the right when under heavy braking. This will almost certainly be your ABS pump / module which has failed. I have owned 8 corsa D's over the years (do not ask me why), and it is a common fault and my Clubsport is also showing very early signs. If you look on the ABS unit, it will have a part number. Locate this part number and send the ABS module off to ECU Testing in Heanor. They will overhaul the unit and return it to you with uprated parts fitted and with a lifetime warranty. I've sent 3 off to them for the same reason, all fixed within 3 days of unit being received by them. There are different prices for the varying units available. You could just try putting a used one in but how long it will last is the question.


    Is the knocking in steering evident when stationary? Theres a video on youtube that may help, I've never had this though: https://www.youtube.com/watch?v=aSV2w3Ic3f4

  3. #3
    VXRed
    Join Date
    15th September 2015
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    Default

    Hey, thanks for reaching out. It's slightly troubling to hear that about the ABS pumps, thanks for the tip, sadly I'm not from the UK so I wouldn't be able to have mine overhauled there.
    As for that video, as a matter of fact, I had seen it too but the nature of my noise is different, it isn't coming from inside the cabin itself.

  4. #4
    VXR enough
    Join Date
    5th March 2016
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    1,068

    Default

    Quote Originally Posted by hitmanmcc View Post
    Hey, thanks for reaching out. It's slightly troubling to hear that about the ABS pumps, thanks for the tip, sadly I'm not from the UK so I wouldn't be able to have mine overhauled there.
    As for that video, as a matter of fact, I had seen it too but the nature of my noise is different, it isn't coming from inside the cabin itself.
    Sounds more like a diff problem than anything else , the idea of a diff is to pull the car around the corner and if it feels better one way than the other it’s most likely the diff at fault


    Sent from my iPhone using Tapatalk

  5. #5
    VXRed srihaggis's Avatar
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    22nd June 2018
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    Quote Originally Posted by GPH69 View Post
    Sounds more like a diff problem than anything else , the idea of a diff is to pull the car around the corner and if it feels better one way than the other it’s most likely the diff at fault


    Sent from my iPhone using Tapatalk
    I can see the diff being a problem if it was when accelerating but it's when braking. Having experienced a few failed ABS units, the best way to diagnose is to try and bleed the front left caliper. You won't get any fluid coming out, so I'd check that personally.

  6. #6
    VXRed
    Join Date
    15th September 2015
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    Default

    Quote Originally Posted by GPH69 View Post
    Sounds more like a diff problem than anything else , the idea of a diff is to pull the car around the corner and if it feels better one way than the other it’s most likely the diff at fault


    Sent from my iPhone using Tapatalk

    Thanks for the input.

  7. #7
    VXR enough
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    9th August 2011
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    Default

    have you ever had the car tracked up inc camber ??

  8. #8
    VXRed
    Join Date
    15th September 2015
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    Quote Originally Posted by bembo449 View Post
    have you ever had the car tracked up inc camber ??
    I usually get it done when I rotate the tyre positions. I've even done it at the dealership. I don't know if they touch the camber though.

  9. #9
    Guest
    Join Date
    27th December 2016
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    13

    Default

    Have you tried getting your steering rack checked ? Or drive shaft ? It might be handy checking all your wheels also to make sure there not buckled or have a flat spot and get them rebalanced

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