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3.0L MULTI-PORT FUEL INJECTION—SERVICE PROCEDURES INDEX page page Idle Air Control Motor . . . . . . . . . . . . . . . . . . . . 138 Canister Purge Solenoid Service . . . . . . . . . . . . 143 Fuel Injector Rail Assembly . . . . . . . . . . . . . . . . 139 Fuel Injectors . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Fuel Pressure Regulator Service . . . . . . . . . . . . 141 Fuel System Pressure Release Procedure . . . . . 138 Heated Oxygen Sensor (O 2 Sensor) . . . . . . . . . 144 Manifold Absolute Pressure (MAP) Sensor . . . . . 143 PCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Throttle Body . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Throttle Body Service . . . . . . . . . . . . . . . . . . . . 138 Throttle Position Sensor . . . . . . . . . . . . . . . . . . 138 THROTTLE BODY SERVICE (1) Disconnect negative battery cable. and remove hose. (Fig. 1) (3) Remove throttle cable and transaxle linkage. position sensor (TPS) wiring connectors. (5) Disconnect vacuum hoses from throttle body. ing nuts. Remove engine harness wiring bracket. (7) Remove throttle body and gasket. Tighten throttle body mounting nuts to 25 N Im (225 in. lbs.) torque. THROTTLE BODY When servicing body components, always assemble components with new O-rings and seals where appli- FUEL SYSTEM PRESSURE RELEASE PROCEDURE The 3.0L MPI fuel system is under a constant pressure of approximately 330 kPa (48 psi). Be- ter, throttle body or fuel injectors, the fuel sys- (1) Loosen fuel filler cap to release fuel tank pres- sure. (2) Disconnect injector wiring harness from engine harness. Refer to Group 8W, Wiring Diagrams. (3) Connect one end of a jumper wire to the A142 circuit terminal of the fuel rail harness connector. (4) Connect the other end of the jumper wire to a 12 volt power source. (5) Connect one end of a jumper wire to a good ground source. (6) Momentarily ground one of the injectors by con- necting the other end of the jumper wire to an injector (7) Continue fuel system service. THROTTLE POSITION SENSOR REMOVAL (1) Disconnect negative cable from battery. tion sensor. (3) Remove throttle position sensor mounting screws (Fig. 3). (4) Lift throttle position sensor off throttle shaft. INSTALLATION (1) Install throttle position sensor on throttle shaft. Install mounting screws. Tighten screw to 2 N Im (17 in. lbs.) torque. (2) Connect electrical connector to throttle position sensor. (3) Connect negative cable to battery. IDLE AIR CONTROL MOTOR REMOVAL (1) Disconnect negative cable from battery. motor. (3) Remove idle air control motor mounting screws (Fig. 4). Fig. 1 Throttle Body 14 - 138 FUEL SYSTEMS Ä |