Turbo Wastegate Actuator

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

Warnings

Tools required

Parts

• Turbo wastegate actuator × 1 — Use OEM Ford part number
• Wastegate actuator gasket × 1 — Usually included with actuator
• Turbocharger inlet gasket × 1 — If disturbed during removal

Preparation

1. Ensure engine is completely cold to the touch before beginning work
2. Disconnect negative battery cable and wait 5 minutes for system capacitors to discharge
3. Remove engine appearance cover by pulling upward on clip fasteners
4. Remove air intake tube from turbocharger inlet to air filter housing
5. If accessing driver side turbocharger, remove coolant overflow reservoir and move aside
6. Place vehicle on level ground and apply parking brake

Procedure

1. 1

   Access Turbocharger Area
   Remove the plastic engine cover and air intake system to expose the turbocharger assembly. For the passenger side turbo, this provides adequate access. Disconnect the charge air cooler outlet pipe from the turbocharger compressor housing by loosening the clamp and carefully pulling the pipe away. Move any wiring harnesses that obstruct access to the wastegate actuator.
2. 2

   Disconnect Wastegate Actuator Vacuum Line
   Locate the vacuum line connecting to the wastegate actuator. This is typically a small diameter hose connected to the top or side of the actuator body. Carefully disconnect the vacuum line by squeezing the quick-connect fitting or pulling firmly if a push-on style. Mark or note the orientation for reinstallation.
3. 3

   Disconnect Electronic Wastegate Control
   If equipped with electronic wastegate control, disconnect the electrical connector from the actuator. Press the connector lock tab and pull straight away from the actuator. Some models use a solenoid mounted separately; if so, disconnect the electrical connector and note routing.
   Torque spec

   Electrical Connector Bolts8 Nm (6 lb-ft)
4. 4

   Remove Wastegate Linkage Clip
   Locate the linkage rod connecting the wastegate actuator arm to the wastegate valve lever on the turbocharger housing. Use needle-nose pliers or a pick to carefully remove the C-clip or circlip retaining the linkage rod to the wastegate arm. Be careful not to drop the clip into the engine bay. Gently disconnect the linkage rod from the actuator arm.
   ⚠Do not force the linkage apart. The wastegate valve should move freely. If resistance is felt, verify the clip is fully removed and check for binding.
5. 5

   Remove Wastegate Actuator Mounting Bolts
   Locate the two or three bolts securing the wastegate actuator to the turbocharger housing. These are typically 10mm bolts arranged around the actuator mounting flange. Use a socket with extension and possibly a swivel adapter to access bolts in tight locations. Remove all mounting bolts and keep them organized for reinstallation.
   Torque spec

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

   Remove Wastegate Actuator
   Carefully pull the wastegate actuator away from the turbocharger housing. The actuator may be stuck due to gasket adhesion or heat cycling. Gently wiggle and pull straight outward to avoid damaging the mounting surface. Once removed, inspect the mounting surface on both the actuator and turbocharger housing for damage or excessive wear.
7. 7

   Clean Mounting Surfaces
   Using a plastic scraper or parts cleaning spray and shop towels, thoroughly clean the wastegate actuator mounting surface on the turbocharger housing. Remove all old gasket material, carbon deposits, and debris. Ensure the surface is completely clean and dry before installing the new actuator. Inspect the wastegate valve lever for smooth operation by gently moving it by hand.
   Torque spec

   Gasket Surface Bolts23 Nm (17 lb-ft)
8. 8

   Prepare New Wastegate Actuator
   Unpack the new wastegate actuator and verify it matches the removed unit. Install the new gasket onto the actuator mounting flange, ensuring proper alignment with bolt holes. If the gasket has an adhesive side, press firmly to secure it to the actuator. Verify the actuator arm moves freely through its full range of motion.
9. 9

   Install New Wastegate Actuator
   Position the new wastegate actuator onto the turbocharger housing, aligning the mounting bolt holes and ensuring the gasket seats properly. Start all mounting bolts by hand to ensure proper thread engagement before tightening any bolts. Verify the actuator arm is positioned to connect with the wastegate linkage rod.
10. 10

    Torque Wastegate Actuator Bolts
    Using a torque wrench, tighten the wastegate actuator mounting bolts in a cross-pattern sequence to ensure even seating. Torque all bolts to specification. After initial torque, verify all bolts are properly tightened by checking each one again in sequence.
    Torque spec

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

    Reconnect Wastegate Linkage
    Align the wastegate actuator arm with the wastegate valve lever on the turbocharger. Connect the linkage rod between the two points. Install the C-clip or circlip to secure the linkage connection. Ensure the clip is fully seated in its groove. Gently move the actuator arm through its range of motion to verify smooth operation and proper linkage connection.
12. 12

    Reconnect Electrical and Vacuum Connections
    Reconnect the electrical connector to the wastegate actuator or solenoid, ensuring it clicks into place and the lock tab engages. Reconnect the vacuum line to the actuator, pushing firmly until it seats completely. Tug gently on the vacuum line to verify secure connection.
    Torque spec

    Electrical Connector Bolts8 Nm (6 lb-ft)
13. 13

    Reinstall Air Intake Components
    Reinstall the charge air cooler outlet pipe to the turbocharger compressor housing and secure with the clamp. Reinstall the air intake tube from the air filter housing to the turbocharger inlet. Ensure all clamps are properly tightened. Route any wiring harnesses back to their original positions and secure with clips. Reinstall the coolant overflow reservoir if removed for driver side turbo access.

Reassembly

1. Reinstall engine appearance cover by pressing down on clip fasteners until they click into place
2. Reconnect negative battery cable and tighten securely
3. Double-check all electrical connectors, vacuum lines, and air intake connections are secure
4. Verify no tools or parts were left in the engine bay

Verification

• Start the engine and listen for any unusual hissing or whistling sounds that could indicate vacuum leaks or boost leaks
• Allow engine to reach operating temperature while monitoring for proper turbocharger operation and no warning lights
• Perform a test drive with light acceleration to verify smooth boost buildup without surging or overboosting
• Use a scan tool to monitor boost pressure and verify wastegate actuator is responding correctly to commanded duty cycle
• Check for any exhaust or boost leaks around the wastegate actuator mounting area after the engine has cooled
• Verify no diagnostic trouble codes are present related to turbocharger or wastegate operation

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