Odd Noises When Warm

[Fiona]

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

[daveyjp]

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!

[Fiona]

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

[Kaine]

Fiona,

Can it be described as a muffled cow, i.e. a short moo sound?

Kaine

[Fiona]

That's it!! Had much experience of muffled cows?

Fi

2002 TDi Sport Cobalt Blue, winter pack, leather, rew

[shezlee]

Another A2 with the no cost option "Audi Cow"...

Lee and Sheridan,
TDI SE, Build 11/01, Dolphin Grey (http://www.audi-a2.co.uk/uk18.htm)
50% Brighter Bulbs : Audi 6 CD Changer (http://www.audi-a2.co.uk/guide1.doc) : Rear drinks holder (http://www.audi-a2.co.uk/guide2.doc) : Floppy Wiper (http://www.audi-a2.co.uk/guide4.doc) : Centre Tray (http://www.audi-a2.co.uk/guide5.doc) : Elasticated Belt System (http://www.audi-a2.co.uk/guide7.doc)

[Fiona]

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

[Kaine]

Unbelievably, they manage to fit it between the engine and the firewall (bulkhead). The A2 is just a tardis!!!