First, let me thanks NOS for his reply to my response.
I believe his suggestions may have helped me find what my problem was. Just in case some of you still have this problem, here is my solution (for a 95 Ford Ranger).
Under the hood, on the engine's right side (passenger's side) there is a plastic sphere (plastic ball) located roughly behind the radiator underneath the radiator hose, which has two thin plastic hoses running to/from it. I'm pressuming this is some kind of vacuum ball. One of those thin hoses (about as thin as the spray nozzle of a WD-40 can) had broken off right on the rubber plug which connects to this "vacuum ball." I simply pulled the broken rubber plug connected to this ball, removed the broken piece wedged in this rubber plug using needle-nose pliers and some WD-40, and re-inserted the remaining loose hose into the rubber plug, making sure it was nice and tight, and plugged the rubber plug back onto the vacuum ball.
I started up the truck and VIOLA, all the vents work again!
So before you buy a new selector switch, or get hosed by a mechanic, make sure you check these two ridiculous lines first!
Good luck to all with your repairs, and thank you for your FAQ's and suggestions!
Sunday, August 27th, 2006 AT 1:50 PM