[ITSv40]

First off, don't take any notice of what Halfrauds have told you. As you have found out they haven't a clue and suggest it needs reading by Volvo diagnostics.

What you need is the car read by VIDA - the Volvo diagnostics system. This will give you the precise info and point you to the exact issues. A Volvo dealer or an independent Volvo specialist can do that for you, or preferably someone who has VIDA near you may be able to read the codes for beer tokens. You could ask in the general forum if any member could help you out.

The other course of action is: if you are on Facebook, join the 'Volvo S40 V40 Classic 96-04' group. There are lots of knowledgeable folks on there who will undoubtedly help you out, either by reading the codes or advise on the codes Halfrauds have given you. Until you get the codes read by VIDA you are looking in the dark.