Grand Prix V6-3.1L VIN J (2000)
Intake Manifold: Service and Repair
Upper Intake Manifold Replacement
Removal Procedure
1. Disconnect the battery ground (negative) cable. Refer to Refer to Battery Negative Cable Disconnect/Connect Procedure.
2. Disconnect the vacuum hose connection from the throttle body air inlet duct.
3. Disconnect the wiring harness connection from the intake air temperature (IAT) sensor in the throttle body air inlet duct. Refer to MT Sensor
Replacement.
4. Remove the throttle body air inlet duct.
5. Drain the engine coolant from the cooling system. Refer to Draining and Filling Cooling System in Cooling System.
6. Remove the accelerator control and cruise control cables with bracket from the throttle body. Refer to Accelerator Controls Cable Replacement.
7. Disconnect the wiring harness connectors from the throttle body.
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Throttle position (TP) sensor
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Idle air control (IAC) valve
8. Disconnect the (left) front spark plug wires. Refer to Spark Plug Wire Harness Replacement.
9. Disconnect the wiring harness attachment clips.
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Camshaft position (CMP) sensor wiring harness
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left spark plug wire harness
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Engine wiring harness
10. Disconnect the thermostat bypass pipe coolant hoses from the throttle body.
11. Remove the ignition coil bracket with the coils, the purge solenoid and the vacuum canister solenoid. Refer to Ignition Coil(s) Replacement and
EVAP Canister Purge Valve Replacement.
12. Disconnect the vacuum hose at the manifold air pressure (MAP) sensor and upper intake manifold.
13. Remove the manifold air pressure (MAP) sensor and the bracket. Refer to MAP Sensor Replacement.
14. Disconnect the emission control vacuum harness.
15. Disconnect the vacuum hose connections from the upper intake manifold.
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Vacuum booster hose
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Automatic transaxle vacuum modulator hose
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Heater and air conditioning vacuum source hose
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Fuel pressure regulator
16. Remove the generator brace. Refer to Generator Brace Replacement.
