Off Vehicle Inspection

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





(b) Using compressed air, clean all the passages and apertures.

NOTICE: To prevent deterioration, do not clean the throttle position sensor, dash pot, throttle opener and IAC valve.

2. INSPECT THROTTLE VALVE





(a) Apply vacuum to the throttle opener.
(b) 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
(a) Apply vacuum to the throttle opener.
(b) Insert a 0.50 mm (0.020 in.) or 0.75 mm (0.030 in.) feeler gauge between the throttle stop screw and stop lever.
(c) Using an ohmmeter, measure the resistance between each terminal.
4. IF NECESSARY, ADJUST THROTTLE POSITION SENSOR





(a) Loosen the 2 set screws of the sensor.





(b) Apply vacuum to the throttle opener
(c) Insert a 0.62 mm (0.024 in.) feeler gauge between the throttle stop screw and stop lever.
(d) Connect the test probe of an ohmmeter to the terminals IDL and E2 of the sensor.
(e) Gradually turn the sensor clockwise until the ohmmeter deflects, and secure it with the 2 set screws.
(f) Recheck the continuity between terminals IDL and E2.