Thanks to everybody who replied. The hoses at the rollover valve are deteriorated, so I ordered them today. I should have them Thursday. After I install them, I won't know for a few weeks if that's the only leak, because that's the approximate frequency it throws the P0442 code.

I've been getting a P0442 periodically from my 97 850 wagon (base, no turbo). I've replaced the gas cap, the electrical part of the ignition switch, and all the deteriorated rubber vacuum-hose couplings I can find under the hood, but I'm still getting the code. I want to inspect the hose couplings a...

I'm trying to locate a bulkhead (firewall) insulating mat for my 97 Volvo 850 P/N 9182445. It seems to be a discontinued part according to a couple of the dealer websites. If anyone knows of someone that's still parting out 850s, I'd appreciate hearing about it.