Download Intake Manifold: Service and Repair Upper Upper Intake Manifold Removal 1. Disconnect the battery ground cable. 2. Remove the air cleaner assembly and the air cleaner outlet tube. 3. Remove the pin-type retainers and the snow shield. 4. Disconnect the accelerator cable, speed control actuator cable and the throttle return spring from the throttle body. 5. Remove the bolts, then position the accelerator cable bracket aside. 6. Disconnect the hoses.- Disconnect the vacuum hose. – Disconnect the evaporative emissions return tube. 7. Disconnect the electrical connectors. – Disconnect the Idle Air Control (IAC). – Disconnect the Throttle Position (TP) sensor. 8. Disconnect the engine wiring harness from the intake manifold support bracket.