Removal
Lower Intake Manifold Assembly:
Upper Intake Manifold:
1. Drain the cooling system. Remove crankcase ventilation and evaporative purge hoses.
2. Disconnect the accelerator cable and speed control linkage, if so equipped, from the throttle body. Disconnect TV cable (transmission). Remove accelerator cable bracket. Disconnect vacuum lines at the intake manifold fitting.
3 Disconnect the spark plug wires from the spark plugs. Do not pull on the wire. Remove the wires and bracket assembly from the rocker arm cover attaching stud. Remove the distributor cap, adapter and spark plug wire assembly.
4. Disconnect supply and return fuel lines. Relieve fuel pressure at valve on metal fuel rail located at Left Hand front corner of engine before disconnecting fuel lines.
5. Disconnect the distributor wiring connector. Remove the distributor hold-down bolt and remove the distributor.
6. Disconnect the radiator upper hose from the coolant outlet housing and the water temperature sending unit wire at the sending unit. Disconnect the hose from the intake manifold. Disconnect two throttle body cooler hoses.
7. Loosen the clamp on the water pump bypass hose at the coolant outlet housing and slide the hose off the outlet housing. Disconnect wires at ECT, ACT, TP, ISC solenoid and EGR sensors. Disconnect injector wire connections. Disconnect fuel charging assembly wiring (SFI).
8. Disconnect the crankcase vent hose assembly at rear of lower intake manifold. Disconnect fuel evaporative purge hose.
9. Remove the upper intake manifold. It may be necessary to pry the intake manifold away from the cylinder heads. Use caution to avoid possible damage to the gasket sealing surfaces. Remove the intake manifold gaskets and seals.
10. Remove lower intake manifold.
11. If the manifold assembly is to be disassembled, identify all vacuum hoses before disconnecting them. Remove the coolant outlet housing, gasket and thermostat.