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Old 11-07-2012, 06:48 PM #1
bornsiper()99
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2000 Audi A4 awd !MYSTERY CLUNK!

So this is going to be a very vague because it is hard to explain and i have had several people look at it and can not distinguish the problem.

The problem:
There is a loud clunck noise almost like a hammer hitting metal (LOUD):

Occurance:
When i stop and also when i accelerate.
This also occurs sometimes when i push down on the front drivers side fender.

I Thought this would be do to a bad ball joint but i put and brand new control arm kit under the car. everything is tight and there is no slop in any of it. I was curious if this could be something with the rotation IE: the transmission, or possibly something to do with the front suspension strut being shot (160k miles on car). The problem seems to becoming from the front drivers side.

Any Ideas will help .

Thanks
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Old 11-07-2012, 07:03 PM #2
Alan777
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A strut is blown and you're wondering why your car makes noises?
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Old 11-07-2012, 07:12 PM #3
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What would be causing that out of curiosity. I did but a jack under it and compressed the shock before and it seems to be pressure there. But i definitely would agree that could be the problem. Thanks a lot.
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Old 11-07-2012, 07:17 PM #4
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Shot how, like it continues to bounce after going over a bump or pushing down on it, or something is physically broken?

Either way that could be it. Otherwise check all your mounts, engine and transmission. In my cars, the ones nearest to the ground break down, probably most cars?

Who are these "several people"?
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Old 11-07-2012, 07:19 PM #5
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ya theres no bounce in it. Compresses like a normal shock would.
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Old 11-07-2012, 07:20 PM #6
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ill post a video of it tom when its light out.
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Old 11-07-2012, 07:21 PM #7
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Oh good for us.

This is an example of a transmission mount.



A bad one will typically have all the rubber be worn off so that the bolt to the metal bracket that goes to your engine is just loose, hence why it "bangs" when you stop fast or accelerate.

Google your car model+ engine mount/transmission mount to see what yours look like, it should be fairly obvious though. There are usually two on the sides of the engine bay and one+ underneath.

Last edited by toolbandfan : 11-07-2012 at 07:26 PM.
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Old 11-07-2012, 08:18 PM #8
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It sounds like a strut mount or a sway bar mount. Good idea replacing those control arms. Those b5 audis are notorious for noises in those ball joints. I would just recommend replacing your struts and strut mounts regardless. But it could definitely be a motor or transmission mount. There's also a mount underneath front and center that is hard to notice but will wear out as well.

Also try ecstuning for replacement parts
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Old 11-07-2012, 08:29 PM #9
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I just replaced the clutch maybe 5000 miles ago which was a hassel to say the least so mounts apear to be fine. I will take some detailed pictures tom. So People can get a better understanding and a video. of the noise. When i put new tie rods on and got my car aligned i asked them about it and they couldn't figure it out as well as a few friends that are mechanics. Thinking about replacing everything piece by piece. Sorry for the vague description. I call it a mystery because its been like this for about 6 month. Hasn't gotten worse or better.
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Old 11-07-2012, 09:16 PM #10
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Also,

http://www.audiforums.com/forum/tags/clunk/
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Old 11-07-2012, 09:34 PM #11
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This is your header manifold bearings . They are less then 2$ a piece I woul get 7 to play it safe

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Old 11-08-2012, 12:38 PM #12
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I vote trans mount or rear motor mount but you may also want to check the axles and exhaust. Grab the lift hook with your hand and push/pull it as hard as you can. If you get the clunk, replace the trans mount. This is a good time to upgrade to a bobble strut and replace your far aft spark plugs/wires if its the V6.
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Old 11-08-2012, 12:43 PM #13
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tie rod end
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Old 11-12-2012, 07:42 PM #14
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