Throttle Body Inspection and Cleaning

1. Oil Filler Cap » Remove

Throttle Body Inspection and Cleaning — figure 1

2. Intake Manifold Cover Bolt (1) » Remove
3. Intake Manifold Cover (2) » Remove
4. Install the oil filler cap after removal of the intake manifold cover to prevent debris from falling into the engine.

Throttle Body Inspection and Cleaning — figure 2

5. Charge Air Cooler Outlet Air Hose Clamp (1) » Loosen until disengaged [2x]
6. Charge Air Cooler Outlet Air Hose (2) » Remove
7. Electrical Connector @ Throttle Body » Disconnect
8. Fully open the throttle valve to inspect the throttle body bore and the throttle valve plate for any deposits.

Caution

Do not subject a throttle body assembly which contains the following components to an immersion cleaner or a strong solvent: Throttle position (TP) sensor Throttle actuator control components Sealed throttle shaft bearings The cleaners will damage the electric components or sensors.The cleaners will damage some of these components that contain seals or O-rings.Solvents can wash away or break down the grease used on non-serviceable throttle shaft bearings.Never use a wire brush or scraper to clean the throttle body. A wire brush or sharp tools may damage the throttle body components.Do not use a cleaner that contains methyl ethyl ketone. This extremely strong solvent may damage components and is not necessary for this type of cleaning.

9. Use a clean shop towel and Top Engine Cleaner or equivalent product to clean the throttle body bore and the throttle valve plate. Adhesives, Fluids, Lubricants, and Sealers If necessary, use a non-abrasive parts cleaning brush to remove heavy deposits.
10. Electrical Connector @ Throttle Body » Connect

Throttle Body Inspection and Cleaning — figure 3

11. Inspect the charge air cooler outlet air hose (2): 11.1. Use dish soap and water to clean the inside of the charge air cooler outlet air hose (2). Clean the interior of the hose, and allow to completely dry. Ensure any oil residue is removed from the hose internal interface surfaces. 11.2. Inspect the interior of the charge air cooler outlet air hose (2) for tears or delamination. Replace the hose if damage is found. 11.3. Inspect the charge air cooler outlet air hose clamps (1). Replace the charge air cooler outlet air hose (2) if damage is found or the clamp components are missing.

12. Charge Air Cooler Outlet Air Hose (2) » Install

Caution

Refer to Fastener Caution.

13. Charge Air Cooler Outlet Air Hose Clamp (1) » Tighten [2x] — Fastener Specifications

14. Oil Filler Cap » Remove

15. Intake Manifold Cover (2) » Install

16. Intake Manifold Cover Bolt (1) » Install and tighten — Fastener Specifications

17. Oil Filler Cap » Install

18. Perform the diagnostic repair verification. Diagnostic Repair Verification