Idle Speed/Throttle Actuator - Mechanical: Testing and Inspection

INSPECTION

INSPECT THROTTLE OPENER
(a) Warm up engine
Allow the engine to warm up to normal operating temperature.
(b) Check idle speed

Idle speed (Transmission in neutral position): 650 ± 50 rpm
(c) Check throttle opener setting speed





(1) Disconnect the throttle opener vacuum hose from the throttle body, and plug the throttle body port.
(2) Maintain the engine speed at 2,500 rpm.
(3) Release the throttle valve.
(4) Check that the throttle opener is set.

Throttle opener setting speed: 1,500 ± 200 rpm

(5) Adjust the throttle opener setting speed by turning the throttle opener adjusting screw.
(6) Reconnect the throttle opener vacuum hose to the throttle body.