thanks, @jreed and Neil -

ps: @richard99: this might help?

@jreed - Thanks - this is helpful, though I can't tell from your description if your 850 was whining immediately on starting or only w/ foot on the gas. Not sure it matters but it seems like it might. Do you remember? Will look into it in any case. I have a '97 850, so this may not apply to your sit...

Hello, I've developed what seems to be, from other threads here, a whine in the serpentine belt of my v70. I'm about to drive back cross country (Cape Cod, MA > CA) and am trying to (1) decide how urgently it needs to be dealt with and (2) how sure I can be, before taking it somewhere, exactly what'...

Belated updated: shop replaced the more accessible O2 sensor, and the CEL has not returned, 6k miles later.

So . . . Smoke test (per shop) shows no leaks anywhere – but there's a bypassed (capped off I think) line in the PCV system. Shop wants to replace the O2 sensors, and also to replace the missing/bypassed PCV hose (and go ahead and do a full PCV service). Is it remotely possible that the missing/bypa...

Bumping this just in case anyone can do anything with it – car failed smog for stupid reasons (gas cap, blue smoke, bulb out in the CEL) and I need to move. Obviously would need to get those things fixed (and through smog) before selling, but it's yours (for whatever you offer) if you can do the wor...

Thanks. Will check that.

Hi, thanks to both of you. I have been peering and poking at hoses and don't see anything super obvious - but can anyone link me to a good diagram / walk through which would show exactly which hose(s) you're referring to, between the MAF and intake manifold? would be much appreciated !

Thanks - will try smoke test first. Is it worth doing The Glove Test ? (Still trying to understand why they jumped to replacing the breather box )