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Discussion Starter #1
2009 1.6hdi

When I switch off the engine there is a buzzing noise that persists for 90 seconds - It would appear that the noise is coming from the Turbo (or within that area) , is there some sort of electrical pump that keeps the oil flowing for a set time ? or is there something sinister going on.

It won't do it if the engine is stone cold, but drive as little as a mile and the buzzing noise will persist for it's 90 seconds. (+- 1 sec)

Any explanations ? - is it a common noise ? Can't remember it making this noise when I bought it 6 months ago, but for the last few months I notice it every time I stop in a quiet place.
 
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