electronic buzzing

[trint]

Howdo all,

Just wondered if an electronic-type buzzing sound is normal (coming from the engine bay) after switching off your ed30/gti's. It only seems to last for about 5 minutes before going out. I do leave the engine running for a minute or so before switching off to let the turbo cool.

[Sweeney]

Yes thats perfectly normal, ive been told from various sources that its the coolant pump circulating coolant around (im pretty sure the turbo is cooled by it too? i may be wrong though.

Still a good idea to let the engine idle for a bit after running though of course

You might also notice a buzzing noise when you first open your door after unlocking, this is the fuel pump priming i believe

[trint]

ahh righty oh, cheers sweeney. I was given a right b****ing as a kid for switching off a heavily worked turbo-ed tractor so idling any engine before switching off has stayed with me.

[TagnuT]

Yes thats perfectly normal, ive been told from various sources that its the coolant pump circulating coolant around (im pretty sure the turbo is cooled by it too? i may be wrong though.

Still a good idea to let the engine idle for a bit after running though of course

You might also notice a buzzing noise when you first open your door after unlocking, this is the fuel pump priming i believe

Sweeney's post is right. The coolant pump continues working until the temp drops.