Replaced my noisy alternator. It was working fine, but at idle it was making a pulsing/rattling/buzzing noise. Only did it at idle but it was annoying!!

Went back to Pick-N-Pull and grabbed the alternator from the 2004 XF with 99K on it that just showed up Nov 29th. $19.99 compared to $279 for an alternator from the chain parts store.

I also grabbed the negative battery cable (mine had an emergency terminal), the passenger side door airbag (my car is throwing a passenger side bag ignition circuit code), and the rubber thing that goes around the base of the windshield wiper.

Got the alternator swapped out in 23 minutes!! No more noise. While disconnecting my negative battery cable I noticed that the positive battery cable terminal was in pretty bad shape, no tin coating left on it. The positive cable on the XF at the wrecking yard was in good shape so I will go back Saturday and grab that.

Off to work!!

Jared