I have the same issue.
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Have done
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new topmounts
ball joints
droplinks
arb bushes
second hand steering rack
And just fitted second hand steering column
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(this has helped as the old adjustable has play in it)
However still have some noise.
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I've even looked at the pushrods on the popup lights and changed the power steering pump rubber bushes.
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Also tried tubing around the coils to stop them hitting each other
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Car has apex springs but the previous G max ones also did it,can only hear it at low speed 20mph.
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May try new inserts and or drumsticks and track rod ends.
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Have been underneath so many times and had the front sussys off,well I've lost count.
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This is a link to youtube showing
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(hearing the noise my column had)
http://www.youtube.com/user/Toecutter12
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Would love to totally fix this.
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