What is this please

rhubarb4

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:sos:Hi opened my bonnet as i could hear a very loud clicking noise, It was comming from this unit. Does an ybody know what it is or if it could be faulty due to the sound it was making. It is an Audi S3 2000 reg

Hear is a photo of the unit im pointing to
IMG_0089.jpg






Thanks Chris.
 
that is the charcoal cannister solenoid , quite normal for it to click
 
Mine clicks too, nothing to worry about though.
 
ok great thanks guys was hoping it was faulty and the cause of my overheating but looks like it is the water pump.