Ford F4ZZ-19805-C Cooling Blower Motor

To disconnect the negative battery cable, squeeze the glove compartment sides to lower the door. Through the opening, unplug the blower motor by pressing the locking tabs and removing the connector. Unscrew the motor from the housing and remove it with the mounting plate, and, if replacing the motor, remove the clip and fan from the shaft and attach to the new motor. Finally, reconnect the battery, test the blower, and reset the glove compartment door.

To disconnect the negative battery cable, squeeze the glove compartment sides to lower the door. Through the opening, unplug the blower motor by pressing the locking tabs and removing the connector. Unscrew the motor from the housing and remove it with the mounting plate, and, if replacing the motor, remove the clip and fan from the shaft and attach to the new motor. Finally, reconnect the battery, test the blower, and reset the glove compartment door.

Remove the right ventilator assembly. Remove the hub clamp from the blower motor hub and withdraw the wheel assembly. Discard the hub clamp. Remove the screws securing the blower motor to the inside of the housing. Withdraw the motor and disconnect the motor's electrical connectors. Installation is the reverse of the removal with the addition of the following. Align the flat on the wheel hub with the flat on the motor shaft and install the blower wheel, Install a new hub clamp.

For models without AC, remove the right register duct, ventilator control assembly, glovebox liner, and ventilator grille. Detach the ventilator assembly and remove the blower wheel and motor. To install, reverse these steps. For models with AC, remove the glovebox liner, disconnect the vacuum hose, remove the bolt securing the instrument panel, and the trim panel. Remove screws and nuts securing the blower housing and air inlet duct assembly. Disconnect the blower motor wiring and remove the mounting plate. If removed, reinstall the blower wheel, secure it, and install the blower motor. Tape the wiring to the air inlet duct, place the assembly back, connect the vacuum hose, then install the glovebox liner and secure the panels.

To remove the blower motor without air conditioning, begin by taking out the glovebox and unscrewing the lower duct. Remove the hub clamp spring and blower wheel, and finally unscrew and disconnect the blower motor. Installation is the reverse of removal, with the hub clamp spring ends positioned 90-degrees from the motor shaft.

To diagnose the blower motor and resistor assembly on 1982 and later models, start by checking the fuse, connections, and ensuring a fully charged battery. Start the engine and connect a voltmeter to the blower motor connector. Test the blower switch through each position, comparing the voltage readings with the specified values. If there is voltage but the blower motor isn't functioning or the readings are higher than specified, the motor may be faulty. Turn off the engine, move the function control lever to the Heat position, disconnect the blower motor resistor's electrical connector, and connect a jumper wire between the lower terminal of the resistor and the black wire's terminal. Connect an ammeter between the top terminal of the resistor and the orange wire's terminal. Start the engine and test the blower switch through each position, noting the ammeter reading and comparing it to the specified values. If the readings are too high and all connections are good, the blower motor is likely faulty. If the readings are off in only one or two switch positions, the resistor assembly may be faulty.