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3.3L AND 3.8L MULTI-PORT FUEL INJECTION—SERVICE PROCEDURES INDEX page page Camshaft Position Sensor Service . . . . . . . . . . . 176 Crankshaft Position Sensor . . . . . . . . . . . . . . . . 176 EVAP Canister Purge Solenoid Service . . . . . . . 175 Fuel Injector . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Fuel Injector Rail Assembly . . . . . . . . . . . . . . . . 170 Fuel Pressure Regulator . . . . . . . . . . . . . . . . . . 173 Fuel System Pressure Release Procedure . . . . . 169 Heated Oxygen Sensor (O 2 Sensor) Service . . . 177 Idle Air Control Motor . . . . . . . . . . . . . . . . . . . . 170 Manifold Absolute Pressure (MAP) Sensor . . . . . 175 PCM Service . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Throttle Body . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 Throttle Body Removal . . . . . . . . . . . . . . . . . . . 169 Throttle Position Sensor . . . . . . . . . . . . . . . . . . 169 THROTTLE BODY REMOVAL (1) Disconnect negative battery cable. clamp. Remove the nut holding the air cleaner as- (3) Remove throttle and the speed control cables. air control motor and throttle position sensor (TPS). (5) Disconnect vacuum hoses from throttle body. taching nuts. (7) Remove throttle body and gasket. THROTTLE BODY When servicing throttle body components, always reassemble components with new O-rings and seals component is difficult, use water to aid assembly. FUEL SYSTEM PRESSURE RELEASE PROCEDURE WARNING: THE 3.3L AND 3.8L MPI FUEL SYSTEMS PRESSURE BEFORE SERVICING THE FUEL PUMP, FUEL LINES, FUEL FILTER, THROT- (1) Disconnect negative cable from battery. sure test port on the fuel rail (Fig. 3). (4) Place the open end of fuel pressure release hose, tool number C-4799-1, into an approved gaso- (5) Continue fuel system service. THROTTLE POSITION SENSOR REMOVAL (1) Disconnect negative cable from battery. tion sensor. (3) Remove throttle position sensor mounting screws (Fig. 4). (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. Fig. 1 Throttle Body Assembly Ä FUEL SYSTEMS 14 - 169 |