Hi, My car is 2007 Focus 1.6TDCI. Recently, I am hearing a whining noise. It sounds to me like to could be coming from the alternator belt or a bearing. The belt itself seems fine though. I am also smelling a sort of burning smell from under the bonnet. It has also reduced massively in fuel economy, down to 30-35mpg from 45mpg.
I had heard it a bit last week and then it went away. I also made a oil change, using the proper grade of oil (Castro, full synthetic, low sap for diesels) during the weekend.
I started hearing it again yesterday morning. I went to the mechanic this evening and said he could hear the start of a bearing failing but it should not affect fuel economy that much.
I have a lot of driving (200miles+, around town mainly) to do next Sunday and was worried if it would be safe to use it...
Thanks a lot, Mark