I've looked everywhere for the answer to this.

The center hose coming out the front of the dynamic chamber travels down towards the primary fuel rail, where it cracked and broke. Where does it attach to?

Hayne's shows it going to the sub-zero valve, but I don't think so. Car won't idle now. Anyone help??

This is a '88 NA.

 

It goes to a metal nipple b/t the two oil injectors on the intake manifold. The passage eventually make its way to the air bleeds for the primaries. The top two on the dynamic chamber are drawing fresh filtered air from in front of the throttle plates. The bottom hose is the only one that is drawing a vacuum from th eback of the throttle plates, and its meant for the vacuum for the solenoid valves. To connect the center hose, your going to have to remove the dynamic chamber.

 

Thanks HAILERS. I was afraid of having to remove the top of the engine, but I might as well dive in. It doesn't sound like that hose would cause the hot idle stalling though.