Wallmart has a kit for that and all cars to accept the new freon. couple a bucks
on the 1988 Vovlo 240, the fuel filter is loca
To fix the ac system on the 1988 240 Volvo, check the freon level first. Check the fuse, the relay, then the compressor clutch to find the defective part.
YES
at a junkyard
Yes I believe actually the 1986 to 1992 Volvo 240 4 doors are all interchangeable parts but I'm not sure for 1985 and earlier models.
You add it very expensively as it is the cost of gold. You will have to retrofit the system to R134A.
ebay, salvage yards, craigslist, local used foreign/volvo shops
bearing
$200
The fuses for a 1988 are inside driver side on the left hand side down below (where the hood release is)
Under Dash Passenger side to the right of the kick panel