Hello everyone! I am very confused to what this sounds could be coming from on my disco. It is in the lower portion of the engine bay but I attached a YouTube link. To describe the sounds is a constant growling. If anyone has any tips I should try to investigate further into thank you.

 

Bad air conditioning compressor or wierd bearing noise ?

 

Welcome to the forum.

Sounds spooky.
Remove the serp belt and run the engine to see if you get the same sound and feel around/spin all the pulleys.
Don't run it too long though without the serp belt!!!!!!

 

And to promote Juke's good advice once you have the belt off, wiggle the pulleys and see if any of them wobble.

To gauge your water pump, wiggle the pulley with the fan still attached. If you get any movement your water pump is starting to fail.