When i turn the car off, there's a 'humming' type of noise which stays on for about a minute or two - is this normal?
Just driven 18 miles, with aircon OFF, and the humming persists (I though it was the aircon system maybe?)
Is this normal?
What is it?!?!
Many thanks
Impster
'humming' noise after switching engine off
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- Doggy
- Mod with a 2.2 HDi, De-Fapped!
- Posts: 10710
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Re: 'humming' noise after switching engine off
It's normal. We think it's the vacuum dissipating, but they all seem to do it.
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
- DiscoPol
- Shiny New C5 2.2 Bi-turbo!
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Re: 'humming' noise after switching engine off
+1dogslife wrote:It's normal. We think it's the vacuum dissipating, but they all seem to do it.

Welly wrote:Well butter my arse!
Re: 'humming' noise after switching engine off
Dont worry mine does the same it lasts for about 30 seconds .
1997 406 2.0 petrol estate lx..D8.............OH dear where does this nut go?