Turbo Wastegate Actuator

This procedure covers the removal and replacement of the turbocharger wastegate actuator on the 3.5L EcoBoost V6 engine, which controls turbo boost pressure.

Warnings

Tools required

Parts

• Turbo wastegate actuator assembly × 1 — Use OEM Ford specification
• Turbo inlet gasket × 1 — Use OEM specification
• Coolant (if drained) × 1 — Motorcraft Orange Coolant

Fluids

• Motorcraft Orange Coolant — 2 qt

Preparation

1. Ensure engine is completely cold (minimum 2 hours after last operation)
2. Disconnect negative battery cable and wait 10 minutes for system capacitors to discharge
3. Raise vehicle and secure on jack stands if working on lower turbo components
4. Remove engine cover by pulling upward on perimeter clips
5. Place drain pan under vehicle to catch any coolant drips
6. Take a photo of wastegate actuator rod position and linkage orientation for reference during reassembly

Procedure

1. 1

   Access the turbocharger
   Remove the air intake tube and any heat shields blocking access to the turbocharger. For the passenger side turbo, remove the coolant reservoir for better access. For the driver side turbo, you may need to remove the battery and battery tray. Disconnect any vacuum lines or electrical connectors in the work area and label them for reassembly.
2. 2

   Locate the wastegate actuator
   Identify the wastegate actuator mounted on the side of the turbocharger housing. It is a cylindrical component with a rod extending to the wastegate valve arm. Note the orientation of the actuator and the position of the connecting rod. Verify this is the correct actuator by checking for physical damage or confirming diagnostic trouble codes.
3. 3

   Disconnect vacuum/pressure line
   Locate the vacuum or pressure line connected to the wastegate actuator. This may be a rubber hose or hard plastic line. Carefully disconnect it from the actuator by releasing any clips or clamps. Inspect the line for cracks or damage and replace if necessary. Plug the line with a clean shop towel to prevent debris entry.
4. 4

   Disconnect the actuator rod
   Locate the connecting rod between the wastegate actuator and the wastegate valve arm on the turbocharger. The rod is typically held by a clevis pin and clip. Use needle nose pliers to remove the retaining clip, then slide out the clevis pin to disconnect the rod from the wastegate arm. Be careful not to drop small parts into the engine bay.
   ⚠The wastegate arm is spring-loaded and may move when disconnected. Keep fingers clear of pinch points.
5. 5

   Remove actuator mounting bolts
   Remove the bolts securing the wastegate actuator to the turbocharger housing bracket. There are typically 2-3 bolts holding the actuator in place. If bolts are corroded, apply penetrating oil and allow it to soak for 10-15 minutes before removal. Keep track of any spacers or washers.
   Torque spec

   Wastegate Actuator Bolts15 Nm (11 lb-ft)
6. 6

   Remove the old actuator
   Carefully remove the wastegate actuator from its mounting bracket. Maneuver it out of the engine bay, being careful not to damage surrounding components, wiring, or hoses. Inspect the mounting bracket for cracks or damage and the wastegate arm for excessive play or binding.
7. 7

   Prepare new actuator
   Remove the new wastegate actuator from its packaging and verify it matches the old unit. Check that the actuator rod moves smoothly and returns to position. Do not adjust the rod length unless absolutely necessary, as it is pre-calibrated. If adjustment is required, measure the old actuator rod extension length precisely.
8. 8

   Install new actuator
   Position the new wastegate actuator onto the mounting bracket on the turbocharger. Align the mounting holes and hand-thread the mounting bolts to ensure proper alignment. Once all bolts are started, tighten them in a cross pattern to the specified torque value.
   Torque spec

   Wastegate Actuator Bolts15 Nm (11 lb-ft)
9. 9

   Connect actuator rod to wastegate arm
   Align the actuator rod with the wastegate valve arm. Insert the clevis pin through the connecting rod and arm, ensuring it passes completely through both sides. Install the retaining clip securely. Verify the connection is solid by gently tugging on the rod. The wastegate arm should move when the actuator rod is pushed or pulled.
10. 10

    Reconnect vacuum/pressure line
    Remove the plug from the vacuum/pressure line and reconnect it to the wastegate actuator. Ensure the connection is fully seated and secure any retaining clips or clamps. Verify the line is not kinked, pinched, or rubbing against hot exhaust components.
11. 11

    Reinstall removed components
    Reinstall all components removed for access in reverse order: heat shields, air intake tube, coolant reservoir, battery tray, etc. Reconnect all electrical connectors and vacuum lines using your labels and reference photos. Ensure all fasteners are tightened securely but avoid overtightening plastic components.
12. 12

    Check and refill coolant
    If coolant was drained or lost during the procedure, refill the cooling system with Motorcraft Orange Coolant to the proper level. Start with the engine cold and fill the reservoir to the COLD FILL line. After running the engine and burping air from the system, recheck the level.
13. 13

    Reconnect battery and clear codes
    Reconnect the negative battery cable. Use a scan tool to clear any diagnostic trouble codes related to the turbocharger or boost control system. This will reset adaptation values and allow the PCM to relearn proper wastegate control parameters.

Reassembly

1. Double-check all electrical connectors and vacuum lines are properly connected
2. Verify no tools or parts are left in the engine bay
3. Ensure engine cover is properly seated on all mounting clips
4. Confirm coolant level is correct at cold fill line before starting engine

Verification

• Start the engine and allow it to idle. Listen for any unusual noises or hissing sounds from the turbocharger area
• Monitor coolant temperature gauge to ensure proper cooling system operation
• With engine at operating temperature, verify no coolant leaks around disturbed components
• Perform a test drive and gradually increase throttle to allow turbocharger boost. Listen for abnormal sounds and verify smooth boost delivery without surging or hesitation
• Monitor for boost-related trouble codes using a scan tool. Codes P0033, P0034, P0045, P0046, P0243, or P0244 indicate wastegate control issues
• Verify turbo boost pressure reaches normal levels (typically 15-18 psi under full throttle) using scan tool live data
• After test drive, re-inspect all connections and check for exhaust leaks around turbocharger

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →

More procedures for this vehicle