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[Audi A3/S3] Strange Knocking Noises


Dyl77
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My 00(W)plate A3 TDi sport has recently developed an irritating knocking noise at the front when going over bumps or uneven road. It sounds like something needs tightened up or some bushes need replaced. I have took it to a garage be checked but they can't find anything. Any ideas?

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i had/have the same problem with my s3, took it to the audi dealers and they couldn`t find a fault. it just got worse and now i have a creaking noise.. am told by an independant garage i need to replace my front bushes... i have ordered powerflex bushes this week. i will keep you posted on results.

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Classic problem on these cars - i thought S3's suffered from it the most but i've seen quite a few A3's suffer lately too. It's the front anti-roll bar bushes. They're only a few quid each and it is possible to change them yourself but it can be a bit of a bugger to do. Dealer will try to sell you a new anti-roll bar too <be warned> they all try this one on and 99% of the time, there's chuff all wrong with the ARB, it's just an easy money-maker for them plus it helps to justify the 2-3 hours labour that they will have to charge to replace the ARB bushes.

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[ QUOTE ]

Dealer will try to sell you a new anti-roll bar too <be warned> they all try this one on and 99% of the time, there's chuff all wrong with the ARB, it's just an easy money-maker for them plus it helps to justify the 2-3 hours labour that they will have to charge to replace the ARB bushes.

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Sounds exactly what the dealer was telling me when mine returned from its service along with a £400+ quote shocked.gif

Any idea where i can buy some and if an independent specialist should fit them for me? (sorry dont mean to be as i'm taking over the post DYL77 it's just mine happens to have the same problem now tongue.gif)

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[ QUOTE ]

the rear bushes are making the knocking noise on mine at the moment.. easy to do, the fronts are pigs.

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When I got home I checked my haynes manual and it does not look to hard to fix. The only problem is that you have to replace ALL the self locking bolts and nuts after changing the bushes. It tells you not to bother with the rear bar because it is part of the rear axle and only trained mechanics (i.e Audi Stealers) should attempt this. If i could get the bushes and correct nuts and bolts i'd do the front one's myself and smile next time I pass the stealers knowing they have not robbed me of £400! grin.gif

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If i could get the bushes and correct nuts and bolts i'd do the front one's myself and smile next time I pass the stealers knowing they have not robbed me of £400! grin.gif

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I'm thinking the same thing dude!

Right, where do we start? Any idea where we buy the correct bushes and nuts??? confused.gif

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The fronts are a bugger to do - i did them on my S3 and it took me a good 2 hours per side. Mainly cos I was having problems getting the screw that holds the bracket/ARB Bush back into the front subframe. It's not helped by the fact that there's chuff-all room to play what with the steering and suspension mechanism.

You can buy the bushes from any Audi dealer - i'm sure i paid £2.50 per side for the front bushes. I never replaced the self locking bolts on mine - iirc there wasn't that many bolts that i needed to undo in the first place. I'm sure that they will only be a few quid anyway though. Go to your dealer, they'll tell you what you need - mine did.

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Cheers S3floyd, Well, the cost effective way is to do it myself (doesn't take much to figure that out if the parts cost under a tenner but labour will take it over the £400 mark EEK2.GIF)

I'll obviously need some instructions on what i should expect to find and do, is there a manual out for the S3?

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[ QUOTE ]

I'll obviously need some instructions on what i should expect to find and do, is there a manual out for the S3?

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I have the haynes A3 manual. It does not cover the S3 or quattro models but there cannot be much difference (if any) between the 2wd front ARB and the quattro versions.

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I think they'll be pretty much the same. It really is a very simple procedure and you dont need to take much apart. The only pain in the butt is that it can be very fiddly. I actually took my camera out with me to record the steps to go through but never got around to taking the photos due to it being such a bugger!!

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[ QUOTE ]

[ QUOTE ]

I'll obviously need some instructions on what i should expect to find and do, is there a manual out for the S3?

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I have the haynes A3 manual. It does not cover the S3 or quattro models but there cannot be much difference (if any) between the 2wd front ARB and the quattro versions.

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Cheers guys i'll nip into Halfords and have a look 169144-ok.gif

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i am told ,if you drive your car hard then the stock bushes( rubber) will wear out quick. if you go for polyurethane type ones eg. powerflex ones they will last longer but downside is the ride will be firmer, i havn`t fitted mine yet.will tell you on monday,!!

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  • 4 weeks later...

I have a 99 A3, and was wondering what these noises were!, now as I understand that its the bushes probably, but been on VAG site usure which ones I would need - not sure between

1 Front Wishbone inner front bushes or

2 front anti-roll bar bushes

or would I need both sets?

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