Vacuum Elbow/Lines Question

alfatango1 · Post by **alfatango1** » 20 Jun 2016, 17:04

Thank you. Looks like routing it from the Flame Trap to the front of the engine to the manifold is the way to go.

alfatango1 · Post by **alfatango1** » 25 Jun 2016, 12:00

Crazy, actually got that little sucker on with just two sets or long nosed pliers. One straight and one curved. Took two times though, gave up a few days ago but tried again this morning and got it by some miracle.

blackVolo · Post by **blackVolo** » 08 Dec 2019, 15:30

I think I have to do this on my -98 2.5T AWD, it gives EFI 232 after 20 km in the city. One question, the picture does not show to me, where the other end the hose is supposed to go?

Post by **polskamafia mjl** » 08 Dec 2019, 18:29

One end connects to the passenger side of the intake manifold and the other conencts to the PTC nipple on the pipe that runs from the airbox down to the turbo inlet.

It's line number 10 in the first picture in this thread: https://volvoforums.com/forum/volvo-850 ... ptc-26628/ .

blackVolo · Post by **blackVolo** » 08 Dec 2019, 22:47

I had the pcv system changed about 3 months ago. Isn't that hose a part of the pcv system? If so than I believe that this hose is changed. And if so ,would that mean that something else is the problem for my car?

EDIT:

in this picture it is hose with parts 14-11-10-13?

My mechanic assures me that it came with the pcv kit and he replaced it.

blackVolo · Post by **blackVolo** » 09 Dec 2019, 07:17

Took some photos. Here is connection to pcv nipple:

: Vacuum connections at intake pcv

Here is the elbow:

: Elbow pipe

And here is one lone tube that is not connected to anything, any idea where this should go?

: Lone tube

Post by **abscate** » 09 Dec 2019, 07:24

Hei, blackVolo

That looks like on the connections to the airbox valve for the heater flap. There should be two pipes sticking out the rear (towards driver) of the air cleaner housing with two hoses/elbows on them on your car, if it does NOT have a turbo

You will need this working in Finland in December!

blackVolo · Post by **blackVolo** » 09 Dec 2019, 10:26

abscate wrote: ↑09 Dec 2019, 07:24 Hei, blackVolo

That looks like on the connections to the airbox valve for the heater flap. There should be two pipes sticking out the rear (towards driver) of the air cleaner housing with two hoses/elbows on them on your car, if it does NOT have a turbo

You will need this working in Finland in December!

What does that mean, airbox valve heater flap? is it for heating up engine from cold, redirecting warm intake air from exhaust manifold? Or is it for cabin heater? Because cabin heater works fine, gives hot and cold as needed.

Post by **abscate** » 09 Dec 2019, 11:17

is it for heating up engine from cold, redirecting warm intake air from exhaust manifold?

Yes, that is the one. Follow the silver fat hose from near the exhaust Manifold and it will lead to the 'motor' that opens/closes the valve to set the air intake to the right temperature.

blackVolo · Post by **blackVolo** » 09 Dec 2019, 14:14

It has a Turbo, if that helps for the diagnosis. Where should I connect the other end ( in the third picture). The lone tube just stands in between fan and throttle body.

Vacuum Elbow/Lines Question

Re: Vacuum Elbow/Lines Question