Don't take this the wrong way!!!
Ok now that I have your attention! I got my Ranger in January and it has ran fine. The only problem with it is when ever the heat or a/c or air is on, and i go up hills (on the highway or secondary roads,) it stops blowing air at all. This is becoming a problem when I am going up any long hill and I noticed it doing it on any slight incline. Anybody have a clue as to what is wrong? Oh and the engine runs fine while this is happening.