Peter-S wrote:The fuel pump is not entirely silent but presumably this is a noise that wasn't previously there. Check that the insulation around the pump hasn't perished and perhaps the pump touches the bracket some of the time as this is likely to amplify the sound it makes.
Rear bearing is possible as well but I would call that more of a whine than a hum if it was on the way out. It's pressed on to the axle shaft so not that straight forward to replace. Can be done at home but you might want to take it to a garage that has a press.
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