I just did a 2002 s80 and the four rivets that hold the door handle have to come out because their is a rivet behind it holding the regulator. It's not a fun job but it can be done.The speaker has to come out as well in order to lock the glass in. I don't know where your from but if you leave a way to call you i could explain any questions you have(I replace glass for a living). You are going to need to reset the regulator motor for the auto up.
Adjust or replace window regulator You could also grease the regulator. This is the mechanism that lifts the window up and down.
10mm socket and bullnose pliers, disconnect the battery first!
there called window scrapers and you can get them from Dave barton or ipd usa
The voltage regulator in a Volvo alternator has been built into the alternator since the 70's. To replace it, you would have to remove the alternator and disassemble it. Then the regulator can be accessed. It is probably soldered in, so you will need a good soldering gun and the ability to de-solder and solder. It would be quicker and easier to replace the alternator assembly with a remanufactured unit. massvolvoman
My 1982 Volvo 244GL had a voltage regulator in the back of the alternator so I assume your 1984 is the same
How do u turn on the passenger airbag in a 05 volvo
The voltage regulator is in the alternator, referred to as an "internal voltage regulator." It's integral with the brush pack and is replaceable.
inside the alternator
How do you replace a fuel filter on a 1999 s80 Volvo?
check the vacuum lines leading from the fuel pump regulator if those are not leaking then it could be the regulator itself.
the 02 senser is on the manifold by the firewall on the passenger side under the hood [ behind and undr the spark plugs]
look in your owner's manual