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I have a 2.0 lt crdi 2002 auto and the problem is when I press the accelorator there is like a pump winding noise coming from behind the dash, doesn't happen all the time.. Not the abs any ideas guys
 

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I think you mean the EGR system, EGR valve or EGR solenoid. Check wiring/ connectors.
You maybe need to loosen up the intercooler bracket and move the intercooler a bit to the side to get better acces.
Greets,
Paul
 

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Why is it making a noise?
A solenoid is in fact a mechanical on-off relay, so it should click or pop instead of wining. This one interconnects the vacuum lines.
Could it be a bad voltage contact, not engaging it enough? What happens when you put a direct 12 volts from the battery to it?
Does it make that noise then?
Or do you maybe have a vacuum leak in one of the lines, making a whistling noise?
Good luck,
Paul
 
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