hi all, I have started to notice an unusual noise, primarily on the drivers side, after revving the engine. It sounds a bit like a release of vacuum pressure or maybe a bearing or pulley rattle? I have attached a link to a short video where you can here the noise just after I rev the engine.

I know it is a long shot but can anybody identify a likely culprit?

https://streamable.com/50jnq9 _______________________________________________

2019 4.4 V8 Diesel Range Rover Autobiography, Byron Blue

Mine made a similar noise on the over-run when I'd damaged my MAP sensor.
Worth taking a peek to see if it's dirty? Long shot! Worth a look.

I will take a look at that, I am glad you could make the noise out from the video and it is not just me imagining it!  _______________________________________________

2019 4.4 V8 Diesel Range Rover Autobiography, Byron Blue

Just a little more info after looking at the car again

- Type of Sound: It resembles a vacuum-like hiss or a whirring bearing noise.

- When It Happens: The noise is noticeable when revving the engine and becomes more pronounced on overrun as the revs decrease.

- Where It’s Coming From: It seems localized to the driver’s side, possibly from the engine bay.

- Variations: The sound might change in pitch or intensity depending on engine speed.

To be even more precise, you could compare it to familiar noises, such as:
- A leaking vacuum hose
- A dry or worn pulley bearing
- A faint turbo whistle or blow-off valve soun _______________________________________________

2019 4.4 V8 Diesel Range Rover Autobiography, Byron Blue