Throttle Position Sensor: Service and Repair

Throttle Position Sensor And Idle Air Control Motor:

The throttle position sensor attaches to the side of the throttle body.

REMOVAL
1. Disconnect EVAP purge hose from throttle body.
2. Disconnect electrical connector from idle air control motor and throttle position sensor.
3. Remove throttle body. Refer to Throttle Body.
4. Remove throttle position sensor mounting screws.
5. Remove throttle position sensor.

Throttle Position Sensor Installation:

INSTALLATION
1. The throttle shaft end of the throttle body slides into a socket in the TPS. The socket has two tabs inside it. The throttle shaft rests against the tabs. When indexed correctly, the TPS can rotate clockwise a few degrees to line up the mounting screw holes with the screw holes in the throttle body. The TPS has slight tension when rotated into position. If it is difficult to rotate the TPS into position, install the sensor with the throttle shaft on the other side of the tabs in the socket. Tighten mounting screws to 2.3 N.m (20 in. lbs.) torque.
2. Lubricate the new O-ring provided with the new throttle position sensor. Use a light grade vegetable oil, NOT ENGINE OIL, and allow excess oil to drain off.
3. Install the O-ring into the groove in the throttle body.
4. Install the throttle position sensor and tighten screws to 2.3 N.m (20 in. lbs.) torque.
5. After installing the TPS, the throttle plate should be closed. If the throttle plate is open, install the sensor on the other side of the tabs in the socket.
6. Install throttle body. Refer to Throttle Body.
7. Attach electrical connectors to idle air control motor and throttle position sensor.
8. Install EVAP purge hose to throttle body nipple.