Hi Doug,

Are you adverse to DIY?
Here's a wide variety of coil packs for your car:
https://www.rockauto.com/en/catalog/volvo,2003,s40,1.9l+l4+turbocharged,1433943,ignition,ignition+coil,7060

Do it yourself and avoid the gigantic markup of parts by greedy mechanics
who aren't happy with $110/hr to change a wiper blade.

Before replacing coil packs, I'd survey all of the two-pin bullet connectors
to the coil packs. They can fail with age. Make sure they are firmly in the connector shells and not able to be pulled back and out of the shell.
You can clean the coil pack male bullet pins with a toothbrush and 90% isopropyl alcohol and blow out with air. Then use some anti corrosion zinc paste (Penetrox-A) on the male pins.
If you find any broken female pins /pigtails you can get new pigtails to splice in at www.davebarton.com (Volvo wiring guru)

Bill