Unknown vacuum/coolant hose

[bostonvert]

I have some trouble identifying a hose after reassembling the whole engine, I labeled everything but the label probably fell of the hose.

It's the T shaped piece under the intake manifold on the picture below, it's the rear hose on the right side of the picture that I cant figure out on to what it connects.



My best guess is that this would be hose number 14 on this diagram or am I completely wrong? So its safe to say that its not a coolant hose and its part of the vacuum system?

http://www.realoem.com/bmw/enUS/show...diagId=11_0849

I'd really appreciate any help, got the car running (rough) and this is the only thing holding me back from getting it roadworthy.

[TobyB]

wtf is that thingus?

A different version of the heater anti- scald retrofit?

I guess I know nothing about e28!

It doesn't look like the brake vacuum plumbing, tho.

http://www.realoem.com/bmw/enUS/show...diagId=11_0845
at the top looks promising- but it's not supposed to be on your car....

t

[raudonis]

Here it is

Išsiųsta naudojantis LG-H870 Tapatalk 4 Lt

[raudonis]

the H piece is a thermostatic ICV, when the coolant is cold it is wide open and bypasses the most amount of air (from in front of the throttle body, to the back of the inlet manifold). When the coolant warms up it closes up and your idle RPMs drop.

Unfortunately most of the used ones are seized in either fully open or fully closed position.

[bostonvert]

the H piece is a thermostatic ICV, when the coolant is cold it is wide open and bypasses the most amount of air (from in front of the throttle body, to the back of the inlet manifold). When the coolant warms up it closes up and your idle RPMs drop.

Unfortunately most of the used ones are seized in either fully open or fully closed position.

Thanks, really appreciate it!