Volvo Repair: 1987 Volvo 240 Wgn rust on underside, rust reformer, volvo dealership

Question
1987 Volvo 240 Sta. Wgn.  I bought it three years ago, and most things are in good shape and it runs great, but it had rust on the underside when I bought it.  I had two plates weled on the underside after I bought it three years ago, and now rust is starting to appear in half a dozen places, including the structural members.  It's not horribly bad, but the Volvo dealership says it's probably not worth putting any more money into.  I LOVE my Volvo 240 and don't want to part with it.  I wish I knew if there is some way to fix the rust so that it will last longer.  If I just slather Rust Reformer all over the rusty spots (some are 3-4" and on structural members), will that stop it for awhile?  The car needs a blower fan right now in order to be liveable in this heat, and that's a $900 job.  It also has electrical kinks now and then.  Do you think there is any way to salvage it?  Can the rust be stopped?  Is the elctrical stuff a nightmare to try and fix?

Answer
900? Who are you taking that car too?  You are being ripped off.  I do that job in the 5-6  range. As far as the rust, Once it starts it keeps going.  I would try to find a newer wagon.  I have a 90 and I have no rust on it at all.  The mid 80's wagons were bad rust cars.  The electrical issues would have to be looked at.  I cant diagnose that stuff online.  Roger