Hey guys, I need some help diagnosing a sound coming from my engine bay. I've got the sound up on Youtube here, http://youtu.be/cuUR1Z95sH8. It makes a sort of ticking noise all the time whether I'm rolling in gear, have the clutch pressed in, or in neutral. It becomes more of a loud hum when...

Recently I did a backyard coolant flush. After the changing the coolant I notice a clicking noise when ac is turned on. Rpm will flutter up and down when clicking happens. Still blowing cold air. Battery level drop slightly(have to stare at it to notice a little change) does not flutter like...