Component Inspection

THROTTLE BODY 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 and dashpot.




2. INSPECT THROTTLE VALVE.
- Disconnect the vacuum hose from the throttle opener.
- 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.
- Reconnect the vacuum hose to the throttle opener.




3. INSPECT THROTTLE POSITION SENSOR.
- Refer to Step 2 in On-Vehicle Inspection. On Vehicle Inspection




4. INSPECT SUB-THROTTLE ACTUATOR (W/TRAC).
- Using an ohmmeter, measure the resistance between the terminals (ACM A and A-, BCM B and B-).

Resistance: 0.5 - 1.0 0hms




- If the resistance is not as specified, replace the actuator by removing the 4 screws and sub-throttle actuator.




5. INSPECT SUB-THROTTLE VALVE.
- Check that there is no clearance between the throttle stop screw and throttle valve gear when the sub-throttle valve is fully closed.




6. INSPECT SUB-THROTTLE POSITION SENSOR.
- Insert a 0.30 mm (0.012 in.) or 0.50 mm (0.020 in.) feeler gauge between the throttle stop screw and throttle valve gear.




- Using an ohmmeter, measure the resistance between terminals.