Hey all, after spending two weeks replacing broken and old parts on my 2002 x5 ive come across a problem. There is a screeching sound coming from the middle of the engine (very vague but i really cant identify the source). Ive attached a video for better reference.

https://www.dropbox.com/s/q9k0vnbud9wfwuj/IMG_3027.MOV

list of parts i have replaced: power steering reservoir and connecting hoses, Alternator, ccv and all connecting hoses, vcg, upper and lower tensioner, new belts, DISA valve and water pump.

Could someone please help me identify the source of the sound? or direct me as to where i could start looking and is it safe for me to continue driving it?

Thank you in advance

Jimmy