Off-Vehicle Inspection

1. CLEAN THROTTLE BODY.
- Using a soft brush and carburetor cleaner, clean the cast parts.



- Using compressed air, clean all the passages and apertures.

NOTICE: To prevent deterioration, do not clean the throttle position sensor.

2. INSPECT THROTTLE VALVE.



- Apply vacuum to the throttle opener.
- Check that there is no clearance between the throttle stop screw and throttle lever when the throttle valve is fully closed.

3. INSPECT THROTTLE POSITION SENSOR.



- Apply vacuum to the throttle opener.
- Insert a thickness gauge between the throttle stop screw and stop lever.



- Using an ohmmeter, measure the resistance between each terminal.

Throttle Position Sensor Terminals Resistance Specifications:

4. IF NECESSARY, ADJUST THROTTLE POSITION SENSOR.



- Loosen the 2 set screws of the sensor.



- Apply vacuum to the throttle opener.
- Insert a 0.54 mm (0.021 in.) thickness gauge, between the throttle stop screw and stop lever.



- Connect the test probe of an ohmmeter to the terminals IDL and E2 of the sensor.
- Gradually turn the sensor clockwise until the ohmmeter deflects, and secure it with the 2 set screws.
- Recheck the continuity between terminals IDL and E2.