Could someone help me to identify these 5 vacuum sources ? I know that 2 of them are for the primary and secondary air bleeders and one of them is for for the oil injectors line, but I don't know wich is wich...

Also, the big vac source at the bottom is for the brake booster, right ?

It's a canadian S5 TII !



Thanks !

 

1. Subzero assist
2. SHOULD be Oil metering air hose.
3. SHOULD be the fuel injection primary air hose ( these two are switched on my S4 turbo)
4. goes to the fast idle thermo wax on the throttle body.
5. goes to the intercooler

Yes thge big one on the bottom is for the brake.

Good luck

 

1. Fuel injector air bleed (NOT sub-zero start assist)
2. Oil nozzle air bleed
3. Fuel injector air bleed
4. Double throttle system actuator (NOT thermowax)
5. Nipple on TMIC (or any pre-throttle air source if you have a FMIC)

The two fuel injector air bleeds (one for the primary injectors and one for the secondary injectors) are interchangeable. Doesn't matter which one goes to which nipple.

 

Ok so the thermowax thing was wrong i was thinking that the double throttle system had a peice of wax in it that adjusted the fast idle when it got warm (thermo) the hose still goes to the water thermo valve on the trottle.

NZ are you sure about #1? my FSM shows that it goes to the subzero

 

The thermovalve is mounted on the thermowax, but they do two different things. I should've said the vac line on #4 goes to the thermovalve and then to the double throttle actuator. The thermovalve is what allows vacuum to reach the double throttle actuator to close the upstream secondary throttles when the engine is cold. This is to stop you romping on a cold engine; it doesn't assist the idle in any way. The thermowax is what raises the cold idle speed.

The FSM drawing is wrong.

 

can we number the whole car like this and identify all the Vaccumm lines. The FSM is a lil bit difficult to understand

Then we can add it to the archives

Jason NYC

 

EDITED FOR LACK OF CORRECT INFORMATION. As in, ooops, it's a S5 not S4. Oh well.

In other words I've erased what I originally wrote.

 

great thanks !

so it is:

1. Fuel injector air bleed (NOT sub-zero start assist)
2. Oil nozzle air bleed
3. Fuel injector air bleed
4. Double throttle system actuator (NOT thermowax)
5. Nipple on TMIC (or any pre-throttle air source if you have a FMIC)

 

4. Double throttle system actuator via the thermovalve.

 

About the number five. YOu have removed your air supply valve that would have been attached with the two studs in the jpg. In the center of the studs is a hole that leads to the hose that goes to the intercooler. You must plug that hole or re-install the air supply valve one or the other.