Throttle Body Cleaning
Refer to Safety Glasses Warning .
{If equipped} Intake Manifold Cover Bolt (1) - Remove [2x]
- If equipped, lift up on the front of the intake manifold cover (2).
{If equipped} Intake Manifold Cover (1) @ Upper Intake Manifold Bracket (2) - Remove
Air Cleaner Outlet Duct Nut (1) - Remove [2x]
- Positive Crankcase Ventilation Tube (2) - Disconnect - Plastic Collar Quick Connect Fitting Service
- Air Cleaner Outlet Duct Clamp (3) - Loosen
Disconnect the electrical connector.
- Evaporative Emission Canister Purge Tube (1) - Disconnect - Plastic Collar Quick Connect Fitting Service
- Air Cleaner Outlet Duct Clamp (2) - Loosen
Air Cleaner Outlet Duct (1) - Remove
- CAUTION:
Handle the charge air cooler inlet and outlet air tubes only by the outside surface, making sure to avoid touching the internal seals. Touching the internal seals can dislodge them from their intended location and lead to seal damage and leaks during tube installation.
Release the charge air cooler outlet air hose retainer spring (1).
- Charge Air Cooler Outlet Air Hose (2) - Reposition
- Disconnect the electrical connector.
- Fully open the throttle valve to Inspect the throttle body bore and the throttle valve plate for any deposits.
- Throttle position (TP) sensor
- Throttle actuator control components
- Sealed throttle shaft bearings
- 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 parts cleaning brush to remove heavy deposits.
- Connect the electrical connector.
- CAUTION:
Verify the charge air cooler inlet and outlet air tube quick connect seal condition and location prior to installation. Seal must be evenly seated in the quick connector body and sealing surface must be free of deformation and damage. Deformed or damaged seals can lead to reduced engine power and/or engine stalling.
NOTE:DO NOT insert fingers inside quick connect to manipulate duct during disassembly/assembly. Rubber pad gloves increase risk to dislodge seal.
Charge Air Cooler Outlet Air Hose (2) - Install
- Engage the charge air cooler outlet air hose retainer spring (1).
Air Cleaner Outlet Duct (1) - Install
Air Cleaner Outlet Duct Clamp (2) - Tighten - Fastener Specifications
- Evaporative Emission Canister Purge Tube (1) - Connect - Plastic Collar Quick Connect Fitting Service
- Connect the electrical connector.
Air Cleaner Outlet Duct Clamp (3) - Tighten - Fastener Specifications
- Positive Crankcase Ventilation Tube (2) - Connect - Plastic Collar Quick Connect Fitting Service
- Air Cleaner Outlet Duct Nut (1) - Install and tighten [2x] - Fastener Specifications
{If equipped} Intake Manifold Cover (1) @ Upper Intake Manifold Bracket (2) - Install
If equipped, push down on the front of the intake manifold cover (2).
- {If equipped} Intake Manifold Cover Bolt (1) - Install and tighten [2x] - Fastener Specifications
- Perform the throttle body idle air flow compensation reset. Throttle Body Idle Air Flow Compensation Reset
Do not subject a throttle body assembly which contains the following components to an immersion cleaner or a strong solvent:
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.