OEM 2000 Chevrolet Impala Intake Manifold

2000 Chevrolet Impala Parts Questions & Experts Answers

• Q: How to replace the upper intake manifold on 2000 Chevrolet Impala?

  A: The first step to replace the upper Intake Manifold requires disconnecting the battery's negative ground cable. Begin replacement by disconnecting the vacuum hose from the Throttle Body air inlet duct then remove the wiring harness that connects to the iat sensor installed in the duct. For the next step disconnect the Throttle Body air inlet duct before draining all engine coolant from the cooling system. The thorough process to replace that upper Intake Manifold begins with removing the accelerator control and cruise control cables with bracket from the Throttle Body and proceeding to detach the wiring harness connectors from the Throttle Body for the throttle position (TP) sensor and idle air control (IAC) valve. Last step is disconnecting the wiring harness attachment clips for the camshaft position (CMP) sensor and left spark plug wire harness. First disconnect the thermostat bypass pipe coolant hoses from the Throttle Body then unfasten the rear generator brace. The work sequence begins with vacuum line disconnect at the upper Intake Manifold and MAP Sensor and EGR Valve and spark plug wires and Ignition Control Module and upper Intake Manifold together with upper Intake Manifold gaskets removal. The manifold seal surfaces should receive cleaning with degreaser after removing the Throttle Body. The installation sequence requires installing the Throttle Body before adding the upper Intake Manifold gaskets and then the upper Intake Manifold followed by the Ignition Control Module and spark plug wires and EGR Valve and MAP Sensor before connecting the vacuum lines at the upper Intake Manifold. Reinstall the rear generator brace then connect the thermostat bypass pipe coolant hoses to the Throttle Body before you install wiring harness connectors that service the throttle position (TP) sensor and idle air control (IAC) valve. Position the accelerator control cable with cruise control bracket onto the Throttle Body and add engine coolant to the cooling system followed by the Throttle Body air inlet duct installation. Finish installation by joining the wiring harness to the Throttle Body air inlet duct intake air temperature sensor and attaching the vacuum hose to the Throttle Body air inlet duct then reinstalling the battery ground cable.