Strange noise near EGR valve. What is it?

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Chasing down too much EGR vs commanded and noticed this noise when switching off. Same if car is cold or warm.
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It might be a electronic Vac Purge Pump, To ensure Boost solenoids shut and air is Expelled, Normal operating Vacuum Is usually supplied by the same line as the Brake master cylinder pump, this only runs when engine is on, But on Diesel's Boost is controlled by solenoid valves, My Peugeot 807 HDI, Had a small pump to purge the vac lines, You usually hear a sound after shutting off the engine for a few seconds, It is quite noisy, If it wasn't working properly you would get anti pollution errors on the HUD, Or starting problems, cos the turbo and stuff will be at idle position and not reset :) Hope that is useful

puggster
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No, mine still does it. I think it has something to do with the vacuum supply reservoir...

sheriff
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I have the same noise near my EGR valve. Kia Optima SX Limited 2014 (it is a GDI turbo).

powerbeast
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hi did you fix this problem yet have it in my f30

darraghmcdonald
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Hi. any chance you've found the reason of the noise???. Got the same noise in my car.

whateveruk
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Egr valve door is open and need to clean because can't close completely...

arpadpetruszka
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Throttle body opening and closing? Happens on my ford

PoppyTheLandy
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Please let me no mines doing the same thing

mhheoyr
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