2002 E46 330i Eibach Pro rear springs problem?? - Page 2

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Thread: 2002 E46 330i Eibach Pro rear springs problem??

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    #11
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    agreed but the orig springs were broken - and by different amounts - interestly? the drivers was the 'more' broken one.....I am going to swap the new springs in the morning [luxury of being unemployed currently :( ] to see if there is a change or not.

    if the droop is still there ? I'm struggling to find what else to check...the arms are bolted to a subframe ? so is that to blame.

    It's my wife's car and I'm concerned that the rear alignment or a component somewhere isn't correct/100%....

    I could see an age sag occurring but this is with new springs.........
     
     

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    #12
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    ok swapped the springs and zero difference ie the height on the drivers side is the same whichever rear spring I put in.
    I will check tyre pressures now and be back soon.

    My money is on a subframe mount being weaker on the drivers side? or a deformed subframe which allows.

    Again a detailed visual inspection with both sides up in the air at once - didn't reveal a "oh.....that's what it is"

    to remove the rear subframe looks like a weeks work ! any online tutorials?

    thanks
     
     

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    #13
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    Not sure if you managed to get this sorted or not. I have the same issue, and am pretty sure I've found the cause...

    The broken spring has caused one side to sit much lower than the other for the last god-knows-how-long. This in turn has caused the rear anti-roll bar to twist even when the car is at rest (height difference between left & right). I had wondered why my broken spring was so much tougher to remove than the non-broken one, and at last realised that the arb was keeping this side wound up too much (I fractured one of the drop links when I bent the hub down

    You can check this by undoing one of the drop links to the arb (don't worry, it won't fall out), driving around the block, then measure the heights afterwards. I'm betting it'll be a lot closer to level afterwards.

    So basically you've got a bent rear anti-roll bar which is dragging the drivers side down too much. A new ARB - or a known-good 2nd hand one will solve the issue.
    E46 330i Touring (Sold)
     
     

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    dubdubz (25-01-2010)

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    #14
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    thats very good! defo worth a try, and please post up results. first time i have heard this as a possible fix. So if this works might be fatique on alot of arb over years of FAT drivers
    I was going to suggest fitting the fronts as if 1 of them were slightly worn it would also cause the car to sit unever aswell!

    ps paddy, posting the bushes tomorrow morning, getting some packageing from work to day.
     
     

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    #15
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    Paddy - I thanked you - in part as I knew there was something causing it - just I hadn't time to check....and it also means that I probably now won't need to remove the subframe [if you are right] as an ARB will fix it

    I assume that you'll be replacing yours - sooner than me - so please do report back!

    thanks
     
     

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    #16
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    Quote Originally Posted by dubdubz View Post
    I assume that you'll be replacing yours - sooner than me - so please do report back!
    Going out to disconnect mine now! Time me
    E46 330i Touring (Sold)
     
     

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    #17
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    Right, jacked it up, took the wheel off, disconnected the arb, put the wheel back on & took it for a quick drive. Drivers side is now "only" 10mm lower than passenger side (was 20mm). I reckon I've solved it... my springs are new though (done about 10 miles on them at most), so it'll take a few more miles before I draw the final conclusions. I'll keep you posted

    Also (afterthought) a new "level" anti-roll bar will help even out the sides too, so the final result will likely be a lot less than 10mm... maybe
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    #18
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    27 minutes
     
     

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    #19
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    "Pitstop" Floundered for a minute of that as I couldn't get my trolley jack under my newly-lowered jacking points
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    #20
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    Quote Originally Posted by Paddy2bsure View Post
    "Pitstop" Floundered for a minute of that as I couldn't get my trolley jack under my newly-lowered jacking points
    i have that problem too!
     
     

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