Intake Manifold: Removal
WARNING: This page is about a different variant/trim than selected.
All vehicles
WARNING:
Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related components. Highly flammable mixtures are always present and can be ignited, resulting in possible personal injury.
WARNING:
Fuel in the fuel system remains under high pressure even when the engine is not running.
- Disconnect the battery ground cable (14301). Refer to BATTERY, MOUNTING AND CABLES .
- Relieve the fuel system pressure. Refer to REMOVAL & INSTALLATION .
- Drain the cooling system. Refer to ENGINE COOLING .
- Disconnect the idle air control (IAC) fresh air tube and crankcase ventilation tube from the air cleaner outlet pipe.
- Loosen the clamp and disconnect the air cleaner outlet pipe from the throttle body.
- Release the clamp and separate the air cleaner outlet housing from the air cleaner inlet housing.
- Disconnect the mass air flow (MAF) sensor electrical connector and remove the air cleaner, air cleaner outlet housing and the air cleaner outlet pipe from the vehicle.
- Compress and slide the hose clamp and disconnect the upper radiator hose (8260).
Vehicles with A/C
- Rotate the belt tensioner clockwise and remove the belt from the generator pulley.
Vehicles without A/C
- Rotate the belt tensioner counterclockwise and remove the belt from the generator pulley.
All vehicles
- Remove the harness routing clips from the generator stud and the engine front cover.
- Remove the generator upper mounting bracket stud and bolt.
- Remove the generator lower mounting bolts and position the generator aside.
- Remove the accelerator control splash shield.
- Disconnect the throttle body cam.
- Disconnect the accelerator cable (9A758).
- If equipped, disconnect the speed control cable.
- Remove the throttle return spring.
- Position the accelerator cable bracket aside.
- Remove the bolts.
- Position the accelerator cable bracket aside.
- Disconnect the throttle position (TP) sensor electrical connector.
- Release the IAC fresh air tube from the routing clip and remove it from the vehicle.
- Disconnect the evaporative emission canister purge valve vacuum hose from the throttle body adapter.
- Disconnect the brake booster vacuum hose and main vacuum harness from the throttle body adapter.
- Disconnect the IAC electrical connector.
Vehicles with EGR system
- Position the exhaust manifold to EGR valve tube aside.
- Disconnect the upper fitting.
- Loosen the lower fitting.
- Position the exhaust manifold to EGR valve tube aside.
- Position the differential pressure feedback exhaust gas recirculation (EGR) system bracket aside.
- Remove the bolts.
- Position the bracket aside.
- Disconnect the EGR vacuum regulator solenoid connections.
- Disconnect the EGR valve vacuum hose.
All vehicles
- Remove the throttle body adapter.
- Remove the four bolts.
- Remove the throttle body adapter.
- Remove and discard the throttle body gasket.
- Disconnect the fuel tubes.
- Disconnect the positive crankcase ventilation (PCV) valve tube from the intake manifold.
- Disconnect the fuel pressure regulator vacuum hose.
- Disconnect the eight ignition coil electrical connectors and remove the coils.
- Disconnect the eight fuel injector electrical connectors.
- Disconnect the hose clamp and remove the heater water hose (18472).
- Remove the bolts, water thermostat housing, O-ring seal and the water thermostat.
- Discard the O-ring seal.
- Remove the bolts.
- Remove the intake manifold (9424).
- Lift the intake manifold.
- Remove and discard the intake manifold gaskets (9439).
- Clean all mating surfaces.
CAUTION:
Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges that make leak paths.