seems like you have more than one problem. idle problem can be caused by multiple reasons. vacum leak, bad throttle position sensor could be a lot of thinks and hard to say without looking at it. that's why you pay a mechanic soo much money.
your clutch problem seems like you have a leacking master or slave cylinder.
A clutch disk can get stuck to the flywheel due to rust or corrosion between the clutch disk and flywheel surface. This can happen if the vehicle has been sitting for an extended period without use or if water has entered the clutch housing. Additionally, overheating of the clutch components can cause the materials to stick together.
I would suspect a weak clutch slave cylinder or clutch master cylinder which may be preventing the clutch from disengaging fully; The slave cylinder is connected hydraulically to the clutch master cylinder. The clutch master is where you add fluid.
Cracks in the clutch disk will cause the noise and a wore syncronizer in will not allow gear to mesh, more so in cold weather.
Could be no air running through it such as sitting in traffic or slow moving
Check for good fuel pressure on the Wrangler. Seven months of sitting could cause fuel to gel in the filter or pump.
It was the clutch master cylinder. It finally went completely out. I checked the slave cylinder, it looked and operated ok, so I assumed it was the master cylinder, I replaced it, it works now.
I'm not quite sure how youare hearing that if you are pressing the pedal, more likely the click is the clutch switch clicking that allows you to start the vehicle, if it truly is the slave cylinder, down on the bellhousing making the click sound it could be loose, or making a clicking sound as it connects with the clutch lever.
A worn out clutch release bearing would cause a whining sound when you put your foot on the clutch.
A slipping clutch.
It is possible that there may be air in radiator.
No it will not cause misfire.
Oiling the a/c clutch will cause the clutch to slip and burn up........