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| D2 - Axles, Brakes, Suspension and Steering Brakes, Springs, shocks, steering racks, steering columns, suspension arms, wheel hubs etc. |
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#1
7th May 2013, 09:24 PM
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Tapping noise under car
My cars developed a curious tapping noise.
It sounds a bit like someone under the car giving it a single tap with a decent hammer. Location would be roughly in line with the back of the engine? It does it under certain circumstances; 1. At low speed when you use the brakes. Just a single tap/ thump. 2. Sometimes when you open the door to get in, before starting. Just one clunk as you open the door. 3. Accelerating or turning a corner. Again, just a single noise each time. It does it pretty much throughout the journey, but never more than one clunk at a time. Anyone had this or got any ideas of the problem? 
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#3
7th May 2013, 10:06 PM
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guess you have checked you still have the correct number of inhabitants in your house
__________________
 Audi S8 2002, Black (even the chrome bits) Audi RS6 Avant 2008, Daytona Grey Maserati Granturismo 2008, Metallic Nero Carbonio Audi S8 2015, Daytona Grey
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#5
7th May 2013, 10:51 PM
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Are you, or have you ever been, a golfer?
Seriously, my old 850 (Volvo, not BM) managed to get (at different times) both golf balls and conkers stuck in the air vent pipework. Never did get the conker out, and it would make a similar one-off clunk.
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#6
8th May 2013, 06:55 AM
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Oooh, you don't want a ball stuck in your pipework. Sounds nasty!
 Seriously, though, how on earth did the golf balls and conkers get in there?
__________________
2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim. Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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#7
8th May 2013, 08:58 AM
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I'm pretty sure it's suspension related.
Although it passed its MoT a few months ago, it was in A for Audi recently for it's therm' problem, and they mentioned 'straight arms and drop links worn' on the report. Sounds plausible to me and car going there on Friday. Just wanted to see if A8 Parts folk had different ideas, beacause it could easily be something else! I'd hate to spend a bunch of lolly on these suspension bits (albeit they are clearly worn) and find its still got the clunk. 
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#8
8th May 2013, 09:06 AM
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Sounds like suspension related to me. The door opening is possibly just enough change of weight about the centre line to depress the suspension for a worn link / bush to click as it moves over the worn part.
__________________
2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
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#9
8th May 2013, 10:24 AM
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Suspension parts worn can make noises appear in strange places...
A4Audi aren't known for talking you into work you don't need.
__________________
2010 Jag XF 3.0D Portfolio S I know.. I know.. 
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#10
8th May 2013, 10:51 AM
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Psyche.
Agree. I hold A for Audi in high regard. I remember once I had an MGB and it had a thump that happened every single time you went over a bad bit of road. It was driving me nuts and after trying absolutely everything, including a replacement axle (!), it turned out to be a big screwdriver that I'd left in the boot. Every time we hit a bump, the handle smacked of the inside of the rear wheelarch.... It ran great with all the work I'd done, including taking the 'driver out. 'Straight arms and drop links' is going to cost about £430.
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