Hi guys, I've got an e46 320cd (2004) and last night its started to make this strange whining noise.
The best way I can describe the noise is it sounds similar to electric power steering like on the mini cooper, but slightly deeper. The noise seems to come and go, but is louder when my foot is down more, but it only makes this noise until around 1700-2000rpm when the turbo comes in and then you can't hear it.
Any ideas on what this could be?
thanks for any help