The antenna goes up/ dowm really slow and then continues to click when it is all the way down

Good advice from Ray but I recommend you check the aerial ground at the lead end - this also checks the cable, check also for continuity between the mast and the aerial plug centre.

If a signal preamplifier is fitted, which is often the case when a short antenna or window antenna is fitted, the antenna lead will connect to the preamp and similar check will have to be performed on the screened lead from the preamp to the radio. Check also the supply and ground to the preamp if fitted.

It is also important the radio has a reliable ground so it isn't trying to draw current down the antenna or aerial ground. Sometimes in order to keep the signal-to-noise ratio to a minimum, it is necessary to fit a braided ground strap to the case of the radio.

Sounds like a broken flywheel Rotate the engine back and forth and listen for a click when you rotate the engine back and forth with the engine off. If it continues see if you can take the flywheel inspection cover off and shine a light up toward the center bolts and look for a crack.

try to set the idle screw on the carburettor

most likely a weak window motor.

There is nothing you can do to fix this at home, it needs to be diagnosed by the dealer with a special tool

recheck the wiring and connections and check for a proper earth wire on the antenna unit

well if you dont want the radio on you can take the radio fuse out if not then you can unplug the wire going to the antenna in the trunk.

You need to pull the fuse for the antenna or just unplug it. It has a fairly ridgid plastic wire that pushes the antenna up and down. Works fine until the wire breaks then it rolls up (antenna down) but it never increases resistance because the antenna never comes down , it's like a fishing reel when the lure breaks off, so the motor thinks that the antenna is still coming down and it will run and run and run trying to do it's job. Your lucky it stuck up and not down. If you want your antenna to go up and down again you'll have to buy and install a new one.

take the bulb out of light under hood and see if it still goes dead .

Does the motor continue to run even though the mast doesn't retract? Is there a loud 'click - click - click" as it tries to retract and extend or more of a chattering noise? Did you clean and lubricate the spool into which the toothed belt goes when the antenna retracts? Use an all weather grease (white lithium). Did you clean the teeth on the gear that drives the belt? There is a small metal guide where the belt meets the drive gear, sometime this wears and allows the belt to slip on the gear. Pull the giude straight out, then rotate it 180 degress and reinstall.