Strange Whine Noise 2.0L

[BongoLawrence]

For a while now my Bongo has had a strange whine noise. It only happens when it's cold on first start. The first few times you put the revs down it develops this strange whine noise.

https://youtu.be/k4riHfhulos
(for some reason YouTube has marked the video as age restricted, not sure I'm showing that much leg in the video)

I've recently changed both the drive belts and alternator (after the alternator failed). Anyone had anything similar? It's a 2001 2.0L.

Thanks,
Mike

[Flanners]

suggest due to cold temperatures and transmission fluid flow rate is much slower....if it is momentary when setting off. Check fluid level and colour.