Odd Noises When Warm

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Fiona

Fiona

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United-Kingdom
Has anyone heard an odd noise when you touch the throttle when the A2 is warm? After I've been in traffic for a while - the joys of London driving - when I accelerate, I hear an odd noise, which I cannot really describe. It is not a crunching or grating rather a low hum, and only for a second or two. Hasn't always done it and I cannot locate where it comes from. Any suggestions?


Fi

2002 TDi Sport Cobalt Blue, winter pack, leather, rew
 
Yes, its very common - some round this forum call it the 'Bittern under the Bonnet'. Its a low pitch booming noise and is caused either by a valve, or the clutch biting. It only occurs on the diesel engine model, mine does it slightly when warm. Does anyone know if a fix has been developed by Audi yet? My only suggestion is turn the radio up!
 
Thanks. I thought the "radio turning up" solution was for the rattling from the rear seat, but it obviously has a variety of uses!

Fi

2002 TDi Sport Cobalt Blue, winter pack, leather, rew
 
That's it!! Had much experience of muffled cows?

Fi

2002 TDi Sport Cobalt Blue, winter pack, leather, rew
 
And that's just the driver!! Just been and had a look can't seem to locate the cow, where do they put it?

Fi

2002 TDi Sport Cobalt Blue, winter pack, leather, rew
 
Unbelievably, they manage to fit it between the engine and the firewall (bulkhead). The A2 is just a tardis!!!
 
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