> Here is a list of the vowels that could also be used as consonants in Old
> Norse:
> Á for both Y and itself
>
> Í for Y before A, E or O
>
> Ú for V or W before A or O
>
> Ó for both W and itself
>
> É for both Y and itself

I have no idea what you are saying :-)
Where can 'Á' stand for 'Y'?
What sound do you mean with 'Y'?

Kveðja,
Haukur