I have a huge problem at the moment with my 2000 Audi S3, When starting my engine from cold, there is a huge whirring type sound coming from the engine bay, when i turn the car of the noise starts to slows down after about 10 seconds.
It is definatly not the fan or belt as far as i know.
When i turn the car on it does the same process, but on the third time of starting the noise disappears.
Any help or suggestions would be much appreciated as this is a little worrying
Many Thanks all