96' Volvo 850 Disconnected vacuum line

blankit · Post by **blankit** » 28 Aug 2015, 00:08

No idea where it goes to, it's at the fresh air hose.. the BCS vacuum line is plugged in but there's two inlets.

Post by **jreed** » 28 Aug 2015, 05:01

On my '97 855, that line connects to the fuel pressure regulator. I wrote up a short guide to replacing the crumbling elbows with silicone tubing here:

Fuel pressure regulator vacuum line replacement

I made this repair a couple of years ago and it is holding up well so far.
Good luck and let me know if I can help out in any way.

Post by **tryingbe** » 28 Aug 2015, 06:01

jreed wrote:On my '97 855, that line connects to the fuel pressure regulator. I wrote up a short guide to replacing the crumbling elbows with silicone tubing here:

No, fuel pressure regulator requires a vacuum source AT the intake manifold. Change it back asap!

That inlet at the piping is part of the TCV control

Scholz · Post by **Scholz** » 28 Aug 2015, 10:35

It does infact go to the fpr. Your diagram even shows it, brother. Jreed saved me on that one. Spent an hour trying to figure it out the day I bought my first volvo.