I got sick of driving in the cold today, so I decided I would figure out this blend door garbage. Mine is stuck blowing cold air, and knocking under the dash (front end HVAC only). This basically helps it shut either way so you get all cold or all hot air. But it will sure fix me until I get the part ordered next week. Unhinge glove box Swing glove box all the way out Turn off the blower and set the temp gauge to where it is clicking. You want the blower off so you can feel the thumps as those will lead you to the door hinge. Reach directly into this spot and try to go STRAIGHT down from there. Basically I was wrist deep into this cavity before I hit the door hinge. There is the blend door hinge opposite of the actuator. If it is clicking when you try to get to it, you WILL feel this thing bouncing up and down on that sensor. Just push it the appropriate way to get HEAT/COOL. This is obviously on the passenger side of the car. If you were to access the driver side similar to this, you would have your hand on that piece of crap actuator. This should get you by until you get that part ordered. If you have an Oreilly's Auto, you can get part #604202, which is the correct actuator for the front HVAC on the 2002-2005 Explorers. I also think it fits the 01 as well???