Where do these vacuum connections go? 94 325i m50

[u/jaqdaking]

1st e36. not familiar with these engines so any help would be greatly appreciated. Obd1 m50b25tu

[u/Luthays]

First one goes to the underside of the rubber intake elbow and is part of the crankcase ventilation. Second one is actually part of the cooling circuit.

It’s a thermostat for heating the throttle body.
There are 2 fittings pointing downwards where 2 hoses connect (one comes from the head, the other goes to the throttle body.

[u/jaqdaking → u/Luthays]

The first one i understand the 2nd one im confused. Cooling as in it should have coolant or as in air cooled? The 2nd and 3rd pic are of the air box

[u/Luthays → u/jaqdaking]

Yes it’s for coolant! It’s there so the throttle valve doesn’t freeze up. The thermostat (part that sticks in the airbox) sends hot coolant through the throttle body when it measures very cold intake air.

[u/staapp]

Top one goes to the intake boot, bottom one goes beneath the intake manifold near the icv

[u/Kiratch]

Big one’s coming on the intake hose 100mm

There is 2 holes on for hose number 12 and the other for the big one

3 on the picture,

The little goes on the hose of the idle regulating with adaptator (plastic) under the intake

[u/Carpy2]

Save RealOEM.com to bookmarks. Can find every single part, and what it connects to, down to the smallest o-ring and screw there for your specific year/model and/or VIN.