H1 V8-6.5L DSL (1998)
Figure 3-18: Stepper Motor Replacement
Stepper Motor Replacement
Removal
1. Disconnect the wire connector at the stepper motor.
2. Remove the two torx screws retaining the stepper motor, disconnect the actuator arm from the spring and remove the stepper motor from the
injection pump (Figure 3-18).
Installation
3. Place the stepper motor on the injection pump while aligning the notch in the actuating arm with the spring on the pump.
4. Install the two torx screws and torque to 40 lb-in (4.5 N.m).
5. Connect the wire connection to the stepper motor.
Solenoid and Solenoid Driver
Figure 3-16: Fuel Solenoid Driver Replacement
Fuel Solenoid and Solenoid Driver
The solenoid and driver provide the fuel injection metering to the individual injectors. The driver receives the PCM command and transmits it to the
solenoid which controls the actual injection process.
The solenoid driver also returns a pulse width signal back to the PCM. This signal informs the PCM that injection has taken place. The pulse width
signal time is in milliseconds.
