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Posted

hi guys

 

for a couple of days i have had a strange noise started coming from the engine bay. it happens as i unlock the car, or turn the ignition on and when i have switch the engine off. just for a few seconds i hear a electrical motor noise, i have never heard this before. anyway after inspecting the noise is coming from the egr valve. funny sound to describe really but its a clicking motor running noise, and I can feel the motor pulsing with my hand on it. I assume whenever I do any of the above it is going through some pre start check or something. the car at the moment runs ok, it is just this noise that has started. has anybody got any ideas or what problems could I get if something was to pack up all together.

 

cheers

 

Daz

Posted

On our 1.6 hdi C4 the egr valve runs a bit after the engine is switched off to help keep it clean and that can be heard but I have never noticed it at other times.

 

On the C5 the suspension pump will run if the car is not at the right level when the doors are unlocked or opened and you get in/out and close a door and I hear this on our 2007 C5 but I have not noticed other noises from the engine area and inside the cabin the heater flaps can be heard doing something and the sat nav hard disc running.

Posted

cheers guys.... its not the suspension. I opened the bonnet and lock and unlock the doors. when the doors unlock you can hear various clicks as relays kick in, but this noise is coming from the egr valve. if you put your hand on the egr body you can feel it pulsing/knocking. and yes it does the same when the engine is switched off. only runs for a few seconds each time. but its suddenly become noticeable, and I wondered what does this mean. wondered if anybody has had this then it resulted is something happening or problems.

I will have a look at the blanking plate, but by blanking the egr does this not cause ecu or bsi problems with it not working or blanked?

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