Blend Door Issues
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Tuned
Joined: Jan 2002
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Blend Door Issues
I assume I'm chasing a blend door issue on my 97. Truck has manual a/c and it blows lukewarm air through the vents. I assume it is blend door related since the rear blows ice cold and the system is fully charged. Any good way to verify before pulling the dash apart?
Laughing Gas
Joined: Feb 2006
Posts: 843
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A few things to check. First pull the temperature **** off and make sure it is not split where it pushes onto the shaft. I have had them split and the **** will not turn the shaft. The next easiest thing is to make sure the control in the dash is actually working. If you run a meter across the terminals on the back you can see if there are any changes as you rotate it. If you decided to go that route post back and I can dig up the specs. The next is to pull the console and remove the actuator motor and see if you can tell if the shaft is broken. I have removed the actuator and had pieces of the blend door shaft fall out. If that happens you know you have a broken blend door. One last thing to check while you have the actuator removed is to turn the temp control with the key on and see if it rotates as you turn the ****.
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Tuned
Joined: Jan 2002
Posts: 421
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Nothing. I tried to turn on the heater on panel and it blows out 85 degrees. The same temperature as the air conditioner.
Thread Starter
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Tuned
Joined: Jan 2002
Posts: 421
Likes: 0
A few things to check. First pull the temperature **** off and make sure it is not split where it pushes onto the shaft. I have had them split and the **** will not turn the shaft. The next easiest thing is to make sure the control in the dash is actually working. If you run a meter across the terminals on the back you can see if there are any changes as you rotate it. If you decided to go that route post back and I can dig up the specs. The next is to pull the console and remove the actuator motor and see if you can tell if the shaft is broken. I have removed the actuator and had pieces of the blend door shaft fall out. If that happens you know you have a broken blend door. One last thing to check while you have the actuator removed is to turn the temp control with the key on and see if it rotates as you turn the ****.
If it is a blend door, is it different between the auto and manual AC cars? The donor at the local PNP has to date been gracious enough to supply all the interior pieces and radio stuff I needed, but it had auto AC. I assume the switch interchanges with the F150?
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Tuned
Joined: Jan 2002
Posts: 421
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That's good...when these trucks (or expeditions) show up at the PNP yards, people gut them like a fish on day one. An '06 expedition showed up and someone cut the entire side off it.
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