DVDs start and stop randomly

You need to replace the walking belt. Don't use the machine until you've replaced that.

Do you know how old the assy drive belt is?

There other item would be the blower under the dash
Should be easy to separate those sounds

If it is a grinding noise then it is probably a bad bearing. If it is more a squell it could be the belt slipping in addition to a bad bearing. If it is a banging sound it could be the belt.

my first thought is belts, but maybe pump
need more info for proper dianosis

Sounds like the serpentine belt is slipping and perhaps struggling to turn pullies.. this would result in horrid squealling noises especially in cold damp weather and loss of power steering ability when A/C is on

(A/C on equals extra strain on the belts grip, when turned off the A/C pulley spins freely hence less strain)

You need to tighten the belt or replace it.

Sounds like your tensioner and belt are both going bad together and need replaced. The tensioner pulls the belt tight to hold enough tension for the belt not to slip, but the belt once it has slipped gets "burned" or slick and slips anyway. When the A/C is engaged it has alot of pull on the belt and slips causing the sound most likely. When belt is off check other bearings for noise to make sure that is your only issue. If one starts to go the others may not far behind.

yes and cheak power stering belt and fluids ok

Your alternator belt must be glazed or loose or both (hence the low volts), replace it or adjust it if it looks ok.
As far as the ticking goes it is the the cam followers, there is a TSB SB00-01-S009 released SEP 2000 that deals with this issue, I beleive it calls for replacing the cam followers with an improved part, this would be expensive like all Japanese cars the parts are very pricey.

I had the same problem with my PET724. I tried cleaning the lens, letting the battery run dead, even beating on it but nothing worked. When I was cleaning the lens again with some cleaning agent I accidentally slid the laser head as far away from the center as it would go. When I loaded another disc it has worked fine ever since. I have played at least two dozen discs so far with no problem.

Hope this helps.