just a quick question here...on the passenger side intake manifold, is the bottom vac line the one that operates the flapper doors? i'm tring to figure out which ones I need to block off after removing ALL HVAC, no heater, flapper doors, ducting, everything is gawn! thank you!

 

According the to hose diagram on the radiator cover, it is the top one, but it is whatever one does not go to the fuel pressure regulator.

 

coooool, thanks rob.

 

My 94 was just like the pics on Rob's website.... top connector to the HVAC controls, bottom connector to the fuel pressure regualtor.

 

thanks fred, i plugged it iff with a cap and now i'm tracing down where the other side leads.

what I mean is that when you disconnect the hvac the lines are still open (its not connected to the intake manifold anymore). so where do all those lines go because the only thing i have left is fuel pressure regulator.

should i just plug it where i disconnected it near the passenger side or is it worth tracing down and removing the rest of the lines that are hidden in the black wire looms???

thanks!!!


and actually....why should it matter which "nipple" the fuel press. reg. is plugged into??? as long as it is pulling vacuum it should be correct. yes or no?

 

The other side? Of the HVAC hose? It goes in the wire loom and comes out at the check valve that is normally by where the a/c pipes enter the evaporator housing.

No, it does not really matter which port is used for what on the side of the manifold. The vacuum is the same. When they made the diagram, they had to specify one or the other and that is just the they chose. That's why I said "whatever one does not go to the fuel pressure regulator" in my first post.

 

oh well that makes a lot more sense now...i'm not sure what i was doing, i think i was just confusing myself some more. i'll check out your website for some pictures of the vac. canister.

i thought that it wouldnt have mattered because of what you posted.

 

Once you cap the port on the manifold, all those lines that were connected to it won't matter. They will just be taking up space.