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If the Heater/AC blower motor has stopped operating on one of the setting, then the problem is not in the switch but in the blower motor resitor. This item has several coiled wires and is housed behind the blower motor just in from of the firewall. If the motor stopped working all together it could be a bad switch on the head unit. 1. Remove the coolant recovery/winshield washer resivoir. 2. Disconnect the electrical connector at the blower motor and the vent hose. Disconnect the cruise control servo (if equipped) and set it aside. 3. Remove the 4 screws holding the blower motor and remove the motor. 4: The resitor is exposed. Remove the bolts holding the resitor. 4. To install the new one, just follow the steps 4-1 backwards. 1991 through 1994 access the switch through the ash tray. Remove and replace 1995 through 2007 access the switch through the radio. Remove the radio by using to removal clips, or unbolt the bezel from the two bolts then slide then entire bezel out. Replace the switch.

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Q: The HeaterAC blower has stopped working - How do you troubleshoot the switch and repair on a 1991 through 2007 Ford Explorer?
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