fordem wrote:
High pitched whistles are usually vacuum leaks, could also be a squealing/slipping belt.
I don't believe that it is a belt as I have had that noise before on a previous car. The Noise is very loud and high pitched, almost ear-piercing.
The noise does seem to change/quieten with substantial revs, making me think that you are probably on the money. If so, its not a super hard fix is it?
Does anyone else have another idea of what it might be?