Envoy 2WD V6-4.3L VIN W (1998)
Intake Manifold: Service and Repair
Intake Manifold Replacement (Upper)
REMOVAL PROCEDURE
1. Disconnect the PCV tube from the air cleaner outlet duct.
2. Remove the air cleaner outlet duct from the throttle body.
3. Remove the air cleaner assembly.
4. Disconnect the following electrical connectors:
^
The A/C pressure switch, if equipped.
^
The throttle position (TP) sensor.
^
The idle air control (IAC) motor.
^
The fuel meter body assembly connector.
^
The manifold absolute pressure (MAP) sensor.
^
The EVAP canister purge solenoid valve.
5. Remove the EVAP canister purge solenoid valve.
6. Disconnect the vacuum hose from the intake manifold, if equipped with A/C.
7. Remove the vacuum brake booster hose.
