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When my 97 Ford Explorer blend door failed I searched the internet and found a simple but slightly difficult way around the problem.
First NAPA sells the blend door assembly it's about $20.00, it is a standard product.
1. First determine if the blend door motor is working. It is a very slim 5/8" thick X 3 X 5 box on top of the AC plenum box behind the glove box. Glove box must be removed. There is a small cable plug into the side of the motor, disconnect it.
Next pry up the motor off of its 4 posts, there is about 3/4" clearance above the motor.
Once the motor is out plug it back into the cable plug, start the truck and move the temperature control. The drive connector on the under side should turn as you adjust the temperature control, if not the motor is bad.
2. If the motor runs and stops at a position it is OK. Next thing to do is buy the blend door kit.
For me to fit under the dash I removed the front seat so I could lay down on my back to see the bottom of the AC/Heater plenum box.
Load up your Dremel with a thin saw blade or grinding wheel. Next mark out a triangle shape on the bottom of the housing. Notice the boss where the blend door bottom shaft sits into. You must cut alongside the boss and then forward toward the fire wall. The triangle shape with boss will be used again so go slow!
Once you complete the cutout the door will come out of the bottom of the housing.
3. What you should find next is the drive connector splines that has been broken from the drive motor connector. The blend door shaft splines are the problem.
Next install the motor back on it's posts, insert the new door up through the bottom of the plenum, locate the spline connector and push the door upward.
NOTE: I found the door installation easier to run the motor to the either extreme before installing the door. It's easier to position the door and it will assure you the motor will not over torque the spline connection if the door jams to the stop and the keeps running!
4. Install the plastic triangle you cut out, be sure the door bottom shaft is in the socket, use a few small pieces of Duct Tape to hold the assembly together. Test the control and door operation. If everything is working, silicone caulk the joint to seal the plenum, wait until the caulk is dried, remove the tape and finish the caulk.
If you can get through this repair you will save yourself about $600. So for $20 and a few hours of labor it worked for me.
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∙ 15y ago
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Where is the blend door actuator on your 1997 F150?
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Where is the blend door located on 1999 Ford truck?
The blend door on a Ford F150 is on a verticle axis and the actuator motor can be seen from the Driver's side foot well, above the transmission tunnel. The motor is attached to the bottom of the heater box and is a little tricky to access. HeaterTreater is the world's leader in aftermarket blend door fixes and has a product to repair the F150. Check the Ebay listings or www.heatertreater.net for diagnostic information and pictures. cgallen
How do you remove a blend door actuator out of a 99 f150?
get a person who does that work to come over
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Check the blend door under the dash on the F150. Check the vacuum system as well. The vacuum controls the blend door and controls the heat as well as air from the defrost.
How do you fix a backdoor on a 1997 F-150?
you dont, there is no back door on a 1997 F150.
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No, a 1997 Ford F150 doors will not fit on a 2001 Expedition. You will need to get a door that is made specifically for the Expedition.
Where can you find the heater control valve for the forward heater on a 1999 expedition?
If you have the 4.6 liter expedition then you dont have a heater control valve. The problem stems from a bad blend door motor or the blend door is broken where it mates with the blend door motor. Blend door motor is located under dash board behind the center counsel. Its white in color and has a plug with 3 wires. The problem is most likely with the plastic blend door itself. The same plenum box is used on the Expedition/Navigator/F150 and you can find information on the common problem on any of these models. There is a video on YouTube showing how to diagnose and repair the system. The actuator motor is hard to get to on the Expedition, but once you get to it, the full repair for the blend door and actuator is within the capability of most shade tree mechanics. This is an expensive repair at the dealer or any garage, so a little investigation of DIY methods may be useful. Check links through my bio page as a starting point.
Where do you find a parts diagram for 1997 Ford F150?
The best place is to purchase a Haynes or Chilton's repair manual.
What is the stock size wheel of a 1997 Ford F150?
15 and 16 inches Look on door jam
