2011 Vauxhall Zafira Zafira Club 1.7CDTI Whirring engine noise

Vauxhall Zafira Problem
The Problem
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hopeful helen

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Whirring engine noise
May 27, 2015 (4 years ago)
Hi, I just noticed a constant whirring sound coming from the engine all the time it's running. It goes from a low tenor sound to a high soprano sound and back again. Sounds like a revving noise. Any ideas on what it might be, please?

Thanks!

Car details
Car: Vauxhall Zafira
Variant: Zafira Club 1.7CDTI
Model Year: 2011
Category: Engine & Drivetrain

Recalls: Vauxhall Zafira Recalls
More: Vauxhall Zafira Problems
Replies and solutions
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whittingehame
Fixes: 12,347
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May 27, 2015 (4 years ago)
Probably the DPF regenerating which is normal .Check this link for further explanation (see Symptoms of active regeneration section )

http://www.theaa.com/motoring_advice/fuels-and-environment/diesel-particulate-filters.html
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