Ok I removed the air tubes and the smog pump. I need help with plugging in some vacuum lines, i also have an open element air cleaner. I was told to cap the line on the TBI that goes to the old air cleaner so that is no problem. I need to know where these go. In the first pic, what does that hose connect to? In the second pic, what connects to that spot? The knob broke off but i can glue it on I think The third pic, what do those 2 hoses go to? The short one that is going up in the pic is connected to the 3 way valve by the EGR. The long one was connected to the spot on the TBI where the line for the air cleaner was at and it was causing a hissing sound from the HVAC unit. That line in the TBI is a suction line so I capped it and the HVAC is no longer hissing. WTF do I do with that line? Its just sitting on top of the intake mainifold out of the way right now.

What motor what year?

1st pic - that hose is the main vacuum line for your accessories - would branch off for the heater controls, maybe cruise control, maybe map sensor, maybe EGR valve - I'm having a hard time remembering. Heater controls definitely.

2nd pic looks like one of the vacuum lines to the EGR valve maybe?

3rd pic - one vacuum line runs into firewall where the wires from the heater box fan enter - this controls heater vents. Other vacuum line runs out from heater controls at same firewall location - this controls the heater diverter valve.

Vacuum controls the door operation of the vents in the dash, redirecting between defrost, bi-level, dash, and floor vents.

Vacuum also runs from the heater controls to the heater diverter valve - when warm is selected, vacuum opens the heater diverter valve under the hood and allows hot coolant to flow through the heater core. When cool is selected, the valve closes and no hot coolant runs to the heater core (keeping the interior cooler by not circulating hot coolant into the cabin).