What's this ?
On my SRT-6: I have a big black plastic “drum” thing bolted on the top of the wing (under the bonnet / hood) which has a Pipe coming out the bottom and a plug in the back of it.
I have three questions:-
1) What is it ?
2) What does it do ?
3) Why does it make a high pitched whirring noise when I first start the engine that stops after about 30 seconds and should it do that ?
It looks a bit like one of the old "after market" alarm systems you fit yourself. If it helps, it has a Bosch label on it and it isn’t the brake servo, in case you were wondering.