It's not, and from the posts above I was told it was just a vent line.

It's an aluminum bodied servo too, and it works. If it's a vac issue within the servo I might just pounce on the Unwired Tools servo and be done with it....

There are 2 white vacuum lines. One is a vent! The other white line goes to the center vents and then goes to the CLOSED part of the defroster pod.

^ gotcha. That line does not get vacuum at all. Interesting that the defrost pod works perfectly but the center vent does not...

Okay I made more progress today. I replaced a vacuum connector and got the pod on the firewall to work! However the line going to the center vent still is not getting vacuum. I think somewhere along the line from the servo to the vac pod it's losing vacuum. I'm going to replace the whole line and see if that works.

That's good news! I finally got my vacuum system sorted and when I get my compressor working I'm either going with an aluminum servo or the UT kit. Both seem to have pros and cons...

Leaky Plastic Tubes
 

Look underneath the battery tray first , that's where I always find cracks in the plastic vacuum tubes , caused by dripping of battery acid .

You'll need to remove the batery tray to properly diagnose this but it's a simple job to do and your tray prolly needs de - rusting & re - painting ahyway .

I finally FINALLY got the AC working properly today!! With R12 no less!!! :dancefool:dancefool:dancefool:dancefool:dancefool:dancefool

Here are my pressures at idle, do these seem correct?

http://a2.sphotos.ak.fbcdn.net/hphot..._4225842_n.jpg

50 Low and 230 High it seems, though the low side fluctuates between 40 and 50.

Still I'm getting 40* out the vents while moving, and about 48 when sitting still. Norm sure doesn't like having the bigger wheels and the compressor on though, I think I could run faster.

Still I'm happy, now to get all the vac pods working correctly.

How hot was it outside?

-J

95*, and according to the weather channel "feels like 101"

Does it get cold fast? or does it take a while to make 40 degrees out the vents?

To my eye those pressures are a bit high, but I'm sure vstech will say otherwise.

awesome, congrats Colin!

Want to fix my wagon now? :cursing:

Very good news! Keep plugging at the vacuum lines and it'll fall into place.

I printed out some vacuum schematics and colored in each "leg" of the circuits as I tested them. It helped me keep track of which lines I had checked. I had a couple of loose check valves and a bad fresh air element. Mine worked fine with both of the fresh air element lines plugged.

It helped me to separate the lines so I could see what was going on:

http://i711.photobucket.com/albums/w...off/second.jpg

It also helped to use a little vacuum connector on the vac pump to check circuits:

http://i711.photobucket.com/albums/w...f/IMG_2170.jpg

I also found a leak in the servo vacuum switch which was screwing up my center vent flappage:

http://i711.photobucket.com/albums/w...ff/zvacuum.jpg

The Medusa like hoses were leaking so I replaced them...

Maybe this will help a little.

I've only done one real "cool down" session so far. It took about 5 minutes to get it down to 40. While driving it it cooled down quicker, obviously, and held it's temperature.

I thought so too, but it is 2.6 pounds of R12 in there... Also it was hot, which I think has something to do with it. I'll recheck pressures tonight when it's cooler (relatively of course).

I'm at the point where I'm just going to order a dozen connectors, check valves, and whatever else I can find to make sure this system is working! Right now I have a thermometer jammed in to the vent which keeps the vents open.

Hogweed did send my a vacuum pod for the center flap since mine is leaking, but it has the wrong style attachment fitting. Mine is the one with the little pegs and those circular clips (I need to figure out how to get those off). Still, the diaphragm should swap in nicely.