Got a mechanical question...

[Only In A Jeep 81]

So the Jeepette just recently had a full tune up. I've also pro-actively replaced the Serpentine Belt already. She runs great, but there's a random noise when I first start it and it's just sitting there idling. It's gonna be hard to describe but it's a clickclickclickclickclickclick sound (different than the 'I need oil desperately' click), pretty loud actually. ALMOST sounds in synch with the cooling fan spinning? It only does it for a minute, and then it stops. I don't hear it every time I crank her up, but more often than not. I tried seeing if it made a difference if I turned on the AC or not, and it will do it either way. I know this is pretty vague info but does this sound familiar to anyone? Thanks in advance!

 

[yosemite.kj]

The a/c cycles on and off even if you haven't turned it on, if the selector knob is on 1)feet, 2)defrost, and 3)feet and defrost setting, no matter what temperature is set. Maybe this is the sound you speak of? Just a thought. You might already know that.