I have an 87 NA, I just ripped out my stock exhaust, and i noticed there is a pipe under the 2 ac lines, ander the metal heater hose, coming from the firewall, that isnt conneted to anything, did i accidentally unplug it?

 

Might be the split air hose. It's an air hose that goes from the back of the lower intake to the main cat which supplies fresh air to the cat and exhaust backpressure to the aux port actuators. If you look in the FSM exhaust chapter there are good views of where it connects. Also covered in the Haynes manual.

 

The spilt air hose is the rubber hose that is clamped to the metal hose going to the main cat, this is coming from the firewall itself and has it's own grommet, and it's smaller in diameter than the split air hose

 

need pics to identify or better description. probably an A/C line that someone disconnected if the car doesn't have working A/C.

 

Sounds more like the line that goes to the brake booster being fed from the intake manifold.

 

Not the brake booster line either, brakes work fine, the line is connected. AC is connected. It's about the same diameter as the fuel lines, and is coming out of the firewall, it isn't conneted to anything right now, i'll se if i can get a pic before work.

 

pictures homie, we need pictures.

jimmy

 

Charcoal canister line..................but that does not *come out* of the firewall. It runs parallel to the firewall.

 

didnt get to take it today, ill try tommorow