Engine whining noise - what is it?

[ginkster]

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Hello all. Newish to the forum and new to T6 ownership. I’m having fun so far however my van has a strange whining noise when the revs are increased (it’s not from the passenger seat!). Having looked at other threads I assume it is the aux belt or cam belt tensioner failing, but am not 100% sure so thought I’d see what others think. I can’t pinpoint it under the bonnet. It’s booked in for both to be changed next week but would be good to have some other thoughts. It’s a 150 diesel with 30k miles and coming up 4 years old. Recording of the noise attached below (hopefully if I am working the forum correctly!).

Thanks

View attachment Engine Noise.mp3

 

[ginkster]

Reporting back in case anyone else has similar. As suspected the noise was a failing aux belt tensioner. Belt, tensioner and water pump changed. Cambelt also done at the same time as it was due soon anyhow. Whine gone and problem solved.

 

[Herbie75]

I think I have the same issue. Is this always the aux belt tensioner?

 

[ginkster]

Not sure about always, but it is certainly the most common cause assuming your symptoms are the same. I guess it could also be the cambelt tensioner too.

 

[Herbie75]

Thanks, will get it looked into.