Doors are OK. The hard white plstic tube coming from the controls looks like the vacuum suppluy line, but there is no hose connected to it and i can't find one under the dash anywhere. Where does it come through the firewall?

 

Mine all seem to come thru at the steering shaft/brake booster area....

 

Don't see one there; guess I'll run a new one. Wonder what happened to the orginal???

 

Removed along with silencer ring....adds about 75 Horsepower I heard!!



Oh yeah, and Ford owns Cummings!

 

some years back they DID own forty percent... but they also owned half of the europena luxury car builders then... I WISH they owned Cummins, so I could get me an F250 Cummins!!!

 

Check the vacuum line that runs along the top of the firewall with the wireing loom. They crack easy, and one leak will make the AC controls quit moving anything.

 

The vacuum line along the top is fine, but there is no vacuum line under the dash connected to or disconnected from the AC controls