INTAKE AIR DISTRIBUTION AND FILTERING
The air intake system consists of the following
- air cleaner
- air cleaner element
- air cleaner outlet tube
- inlet tube
- resonator
- mass air flow (MAF) sensor
- throttle body
- intake manifolds
The intake air system
- cleans intake air with a replaceable, dry type air cleaner element.
- measures airflow and air temperature with the MAF sensor.
The throttle body
- controls air supply to the upper intake manifold by positioning the throttle plate.
- connects the accelerator cable and, if equipped, cruise control actuator cable to the throttle plate.
- is not adjustable.
- cannot be cleaned.
Scheme 505
Scheme 506
Scheme 507
- With the vehicle in NEUTRAL, position it on a hoist.
- Remove the throttle body. See «THROTTLE BODY»(ref-221822-S11583564322006022600000) .
- Remove the fuel injection supply manifold. See «FUEL INJECTION SUPPLY MANIFOLD -- 2.3L»(ref-221826-S34441852272006022600000) .
- Remove the oil level indicator tube. See «OIL LEVEL INDICATOR AND TUBE»(ref-221822-S06083088102006022600000) .
- Disconnect the vacuum tube and position it aside.
- Disconnect and remove the vacuum hose.
- Disconnect the fuel vapor return hose.
- Disconnect the idle air control (IAC) motor electrical connector.
- Disconnect the swirl control valve electrical connector.
- Disconnect the knock sensor (KS) electrical connector.
- Separate the KS wire harness from the intake manifold.
- Disconnect the temperature manifold absolute pressure (TMAP) sensor electrical connector.
- Disconnect the oil pressure sender electrical connector.
- Detach the pin-type wire harness retainers and position the harness aside.
- Remove the intake manifold bolts.
- Reposition the intake manifold, loosen the lower crankcase ventilation hose clamp and disconnect the crankcase ventilation hose.
- Remove the exhaust gas recirculation (EGR) tube.
- Remove the intake manifold and the intake manifold gaskets.
- To install, reverse the removal procedure.
Scheme 508
Scheme 509
Scheme 510
- Disconnect the air cleaner. Disconnect the outlet pipe. Disconnect the mass air flow/intake air temperature sensor electrical connector.
- Remove the bolt and remove the air cleaner housing.
- To install, reverse the removal procedure.
Scheme 511
- Remove the air cleaner. See «AIR CLEANER»(ref-221822-S10940237912006022600000) .
- Remove the battery tray. See «BATTERY TRAY -- 2.3L»(ref-221834-S26451799952006022600000) .
- Remove the bolt and the intake pipe.
- To install, reverse the removal procedure.