Express 3/4 Ton Van V8-5.7L VIN R (1998)
Intake Manifold: Service and Repair
Intake Manifold Replacement (Lower)
REMOVAL PROCEDURE
1. Disconnect the battery negative cable.
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
2. Drain the engine coolant.
3. Remove the air cleaner intake duct.
4. Remove the engine cover.
5. Remove the coolant reservoir.
6. Remove the following coolant hoses:
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Upper radiator hose
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Both heater hoses
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Coolant by-pass hose
7. Disconnect the following electrical connectors.
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SCPI injector electrical connector.
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Manifold Absolute Pressure (MAP) sensor
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Canister purge solenoid
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Idle Air Control (IAC) motor
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Throttle Position (TP) sensor
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Exhaust Gas Recirculation (EGR) valve
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Engine Coolant Temperature (ECT) sensor
8. Use a twisting motion in order to remove the brake booster vacuum hose, if equipped.
9. Remove the PCV at the intake manifold (twist to unlock).
10. Remove the distributor from the engine.
11. Remove the fuel pipes from the rear of the engine.
12. Remove the accelerator control cable and the cruise control cables, if equipped, from the throttle shaft.
13. Remove the accelerator control cable bracket from the throttle body.
14. Remove the ignition coil and ICM bracket.
