Ford Mustang (1999-2004) Service Manual: Intake Manifold Runner Control (IMRC) Actuator - 3.8L

Removal and Installation

1. Disconnect the battery ground cable. For additional information, refer to Section.

2. Drain the cooling system. For additional information, refer to Section.

3. Remove the upper intake manifold. For additional information, refer to Section.

4. Remove the fuel injector supply manifold. For additional information, refer to Section.

5. Remove the coolant bypass tube. For additional information, refer to Section.

6. Remove the bolt and heater water inlet tube at the back of the lower intake.

Intake Manifold Runner Control (IMRC) Actuator - 3.8L

7. Remove the two stud bolts and one bolt. Position the actuator aside.

Intake Manifold Runner Control (IMRC) Actuator - 3.8L

8. Disconnect the linkage and remove the actuator.

Intake Manifold Runner Control (IMRC) Actuator - 3.8L

9. NOTE: New plastic IMRC retainers must be installed any time an IMRC rod is removed.

NOTE: Before installing the IMRC actuator, be sure to rotate the motor driver plate until the levers make contact with the set screws, then rotate the motor until the motor bracket bolt holes line up with the tapped holes in the lower intake manifold.

NOTE: Discard O-ring and install a new O-ring on the heater inlet tube. Lubricate the O-ring with engine coolant prior to installation.

To install, reverse the removal procedure.

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