Q: How to Remove and Install an Air Injection Pump and Check Valve?
A: Disconnect the negative battery cable from the remote ground terminal or battery. Remove the engine cover. The air injection pump is located behind the left end of the engine, above the rear portion of the transaxle case. Remove the Powertrain Control Module (PCM) and the PCM mounting bracket. Detach the tubes from the air pump by squeezing the collars of the quick-connect fittings. Raise the vehicle and support it securely on jackstands. Remove the bolt securing the air pump relay to the pump and reposition the heat shield. Lower the vehicle and remove the heat shield upper mounting bolt. Detach the shield. Disconnect the electrical connector from the air pump, remove the three mounting bolts, and detach the air pump from its bracket. Installation is the reverse of the removal procedure. Disconnect the air hose from the Secondary Air Injection Check Valve. Remove the Secondary Air Injection Check Valve mounting bolts and detach the valve from the exhaust manifold pipe. Clean the exhaust manifold pipe flange and the Secondary Air Injection Check Valve flange. Installation is the reverse of removal. Be sure to use a new gasket and tighten the bolts to the torque.