Nightmare might be an overstatement. I have every hose but one connected after a PCV & PTC clean and swap on a 94' 850 Turbo. The hose in question is the smaller one in the combo that comes from the breather box beneath the intake manifold and hooks back behind the engine. The large hose connects to the PTC valve on the turbo hose but I cannot for the life of me find out where the little hose connects. Any help would be much appreciated.

 

I know the answer to your question, but I am not 100% following you personally. I guess you are talking about the big and little hoses that are held together in a bundle, right? Originally using insulation.

The little hose connected to the plastic hose between the MAF and the turbo inlet.

Good diagram here a few posts down. https://volvoforums.com/forum/volvo-...coolant-31411/

On my 94, this flow went through a heater that was mounted under the "volvo 20 valve" plastic cover. This heater was just a heater, but it added to the confusion.

 

That diagram was the ticket. Thanks!

 

For anyone who stumbles across this and has the same question. Here are the diagrams that Firebirdparts mentioned. I was referring to "10" on the diagram.