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How do I Replace a Chevy Lumina Intake Gasket

The Lumina was manufactured by Chevrolet and first introduced on the North American market in 1990. It featured three different body types. Chevrolet Luminas engines were equipped with multiport fuel injection system that required a special intake manifold. The intake manifold is designed to distribute the air fuel mixture in the engine. As the fluids pass constantly through the intake manifold, the gaskets get corroded and require to be replaced.

Instructions

Removal

1

Disconnect the batterys negative (ground) cable to prevent injury. Disconnect the vacuum hose connection from the throttle body air inlet duct. Disconnect the wiring harness connection from the Intake Air Temperature (IAT) sensor in the throttle body air inlet duct. Remove the throttle body air inlet duct. Drain the engine coolant from the cooling system.

2

Remove the accelerator control and cruise control cables with bracket from the throttle body. Remove the wiring harness from the retainer. Disconnect the throttle position (TP) sensor and idle air control (IAC) valve wiring harness connectors from the throttle body. Disconnect the front spark plug wires.

3

Disconnect the wiring harness attachment clips of camshaft position sensor (CMP). Remove the nut from the coolant pipe to the throttle body. Disconnect the thermostat bypass pipe coolant hoses from the throttle body. Remove the engine mount struts. Disconnect the right spark plug wire retaining clips. Remove the spark plug wires at the coil pack.

4

Remove the ignition coil bracket with the coils, the purge solenoid, the vacuum canister solenoid, the vacuum lines, and the electrical connections. Disconnect the vacuum hose at the manifold air pressure (MAP) sensor. Remove the Manifold Air Pressure (MAP) sensor and the bracket. Disconnect the emission control vacuum harness. Disconnect the vacuum booster hose, automatic transaxle vacuum modulator hose, heather and air conditioning vacuum source hose and fuel pressure hose from the intake manifold.

5

Remove the drive belt. Remove the front generator brace. Remove the rear generator brace. Remove the Exhaust Gas Recirculation (EGR) valve. Remove the right-hand intake manifold bolts and studs. Remove the left-hand upper intake manifold bolts. Remove the intake manifold. Remove the intake manifold gasket.

Installation

6

Install the throttle body. Lay the intake manifold gasket on the cylinder block. Position the intake manifold on the new gasket. Loosely tighten the left hand intake manifold bolts, the right hand intake manifold bolts and the studs. Then, tighten the intake manifold bolts and studs 18 foot-pounds of torque.

7

Install the Exhaust Gas Recirculation (EGR) valve. Install the rear generator brace and the front generator brace. Connect the vacuum hose connections to the intake manifold. Those connections include the vacuum booster hose, automatic transaxle vacuum modulator hose, heather and air conditioning vacuum source hose and the fuel regulator hose.

8

Plug in the emission control vacuum harness. Install the manifold air pressure (MAP) sensor and bracket. Connect the vacuum hose at the manifold air pressure (MAP) sensor and the intake manifold. Install the ignition coil bracket with the coils, the purge solenoid, the vacuum canister solenoid, and the spark plug wire retainers. Connect the plug wires to the ignition module. Connect the vacuum lines, and the electrical connections. Return the engine to the proper position.

9

Install the engine mount struts. Connect the thermostat bypass pipe and the coolant hoses to the throttle body. Connect the camshaft position (CMP) sensor wiring harness, spark plug wire harness and engine wiring harness. Install the throttle position (TP) sensor and idle air control (IAC) valve.

10

Install the accelerator control and cruise control cables with bracket to the throttle body. Connect the wiring harness to the retainer. Fill the cooling system with engine coolant. Install the throttle body air inlet duct. Connect the wiring harness connection to the intake air temperature (IAT) sensor in the throttle body air inlet duct and then connect the vacuum hose connection to the throttle body air inlet duct. Reconnect the negative battery cable.

Posted by Unknown at 3:01 AM

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