Noise coming from engine/ac off/ running in idle soundling like clack directly overhead, middle of engine sounds coming from- proabaable issue??

Sounds like it is time to have some work done or to move on to something newer.

look at your idler pulley since the ac clutch runs on the serpintine belt its moving alot faster the berings are prob bad in it takes 10 minutes to take off and 17 dollars to replace n another ten but if you take it off spin it in your hand if its rubbing n stopping fast(should spen fast like a skateboard wheel) then its bad that could be all it good luck hope this helps

Sounds like your valve lifters. It's possible that they drained the oil and never refilled it. This does happen when they go on break or lunch half way through a job. They think they added the oil, but did not. Out you go, Mr. Clack-Clack.

It sounds like you have a valve or rocker issue, I would run an engine cleaner through the engine. I suggest draining 1 quart of oil, pour in the cleaner and run engine for 5 min. Let engine cool and drain the oil. Pretty much another oil change. This will hopefully clean a sticking valve if this is the issue. But I also would check for anything hitting the pulley's or fans that may have came loose. I've seen this a lot. Good Luck. It may take 2 cleanings for the engine, so don't get disappointed.

It maybe a loose heatsheild on the manifold, converter, or underbody heatsheild.

compression test engine to check top end for problems(clacking noises could mean low oil pressure or level or bad lifters etc). Have the engins smoke tested for any vacuum leaks

have the water pump bearing checked as well as all the bearings for the drive belt for the accessories

timeing has slipped or cam broken

have the ac recharged and pressure tested

transmission is bad