[jsou]

This just started happening and I noticed the rattling starts when the AC is on. I'm assuming it's a belt. I had a different ticking type noise from the engine bay a couple weeks back and that was due to a faulty Power Steering unit.

Time to bring it back in to the dealership for another repair.

In the video, AC goes on at around 22 sec.

[Big Tom]

That dosen't sound good.
The sound is there even when the AC is off and gets more pronounced when the AC is being activated.

It seems to be coming from the engine it self, and when the engine gets more load (AC on) the sound increases.

My guess is bad internals somewhere in the engine.

[jsou]

It was the power steering pump that was replaced two weeks ago that went bad again.