probably the sensor
Depends what is worng with it might be corroded connections easiest is to get one from the junk yard and replace it
1A Auto
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its on the vin plate on your door
On some E150 it is located under the dash on the drivers side. On 2003s it is located in the left (drivers side) quarter panel below the window, near the drivers side door frame.
snap the black cover off inside the drivers door in front of the window undo blots disconnct wire fairly simple
The Ignition Control Module (ICM) on a 1996 Ford E150 Club Wagon is typically located on the passenger side of the engine compartment, mounted on the distributor or nearby on the firewall. It may be secured with screws and connected to the wiring harness. To access it, you may need to remove some components for better visibility and reach. Always refer to a repair manual for specific instructions and safety precautions.
It is located on the Left Side ( facing the engine) by the Alternator.
Remove the instrument cluster.
The tire pressure for a 1982 Ford Van E150 Club Wagon, with the door sticker worn off, is 55 psi in the front. In the back the psi is typically 80. It can depend on your air temperature.
I am not familiar with a "blend door". Can you elaborate more about this device? What does it do, what is its purpose, etc.? I saw this question on another ANSWER website for a F150. The blend door is the mixing, distribution chamber on the heater. On the F150 it was on the cabin firewall just above the transmission hump. On the E150 (van) it should be under the dash. Follow the air distribution lines to their source. When I get a more descriptive answer, I'll include it. Above your passenger's feet is some black plastic duct work. Behind this is the heater core and behind that is the blend door. It is driven by a stepping motor on the right side. If this isn't working pray that the problem is in the electronics that feed the stepping motor. Once you remove the motor it is almost impossible to get it back in. Getting to the door requires a lot of work taking out a lot of stuff from very awkward positions. If you pull the motor the door falls down which is the fresh air/AC position. To get heat the door must be rotated up.