[rawright05]

Does anyone have a diagram of how to hook up the vacuum lines under neat the dashboard for the a/c?

Everything i hooked up except i have one yellow line hanging out and i cannot figure out where it goes. That may be the reason why the air does not blow through the front vents.

[jerry9665]

Check the engine bay on the driver's side firewall. That is where I found a cracked line. I fixed it and the air blew through the dash vents again

[NavySVO]

If the HVAC controls lose vacuum, the system will shift to the defrost (windshield) mode automatically. Ford did this for safety reasons to ensure the best possible visibility.

[rawright05]

How do I fix the problem? The HVAC controls?

[rawright05]

I think the problem is the yellow line hanging down. Because it does blow through the defrost and on the floor.

[Jesse5150]

i know its a little late reply, but the yellow line goes up into the dash by the steering colum into a gold colored silinoid. it is easier to unscrew the relays so you can reach.