Idle speed control acutator info
This is in reference to the earlier older topic here: https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26389052.cfm As for the 'Idle speed control actuator' it was not installed in all m...
Forum Discussion
As for the adjustment of the 'Idle speed control actuator' (Vacuum can) aka throttle kicker...
Idle Speed Control Actuator Adjustment
Procedure: (from manual)
Before adjusting ISC actuator you must first check the minimum idle speed to be within specifications. Refer to SPECIFICATIONS/IDLE SPEED. (ISC actuator must have vacuum applied so that it is not contacting the throttle lever.) See image VIEW A.
Remove vacuum hose on ISC actuator on warm engine.
Adjust ISC actuated idle speed to 1300 +/- 50 rpm. See image VIEW B.
Install vacuum hose.
In the even the vacuum can is leaking and not holding vacuum and you're unable to source another. You'll need to get at the 'Idle adjustment screw' that is covered by GM on the front side of the TBI. Turn it open roughly 1 turn. This will open the throttle blade slightly. The IAC will/should make up the difference.
As for the adjustment of the 'Idle speed control actuator' (Vacuum can) aka throttle kicker...
Idle Speed Control Actuator Adjustment
Procedure: (from manual)
Before adjusting ISC actuator you must first check the minimum idle speed to be within specifications. Refer to SPECIFICATIONS/IDLE SPEED. (ISC actuator must have vacuum applied so that it is not contacting the throttle lever.) See image VIEW A.
Remove vacuum hose on ISC actuator on warm engine.
Adjust ISC actuated idle speed to 1300 +/- 50 rpm. See image VIEW B.
Install vacuum hose.
In the event the vacuum can is leaking and not holding vacuum and you're unable to source another. You'll need to get at the 'Idle adjustment screw' that is covered by GM on the front side of the TBI. Turn it open roughly 1 turn. This will open the throttle blade slightly. The IAC will/should make up the difference.
Prior to doing this you must make certain that the min idle speed is set first.
Idle Speed Control Actuator Adjustment
Procedure: (from manual)
Before adjusting ISC actuator you must first check the minimum idle speed to be within specifications. Refer to SPECIFICATIONS/IDLE SPEED. (ISC actuator must have vacuum applied so that it is not contacting the throttle lever.) See image VIEW A.
Remove vacuum hose on ISC actuator on warm engine.
Adjust ISC actuated idle speed to 1300 +/- 50 rpm. See image VIEW B.
Install vacuum hose.
In the even the vacuum can is leaking and not holding vacuum and you're unable to source another. You'll need to get at the 'Idle adjustment screw' that is covered by GM on the front side of the TBI. Turn it open roughly 1 turn. This will open the throttle blade slightly. The IAC will/should make up the difference.
As for the adjustment of the 'Idle speed control actuator' (Vacuum can) aka throttle kicker...
Idle Speed Control Actuator Adjustment
Procedure: (from manual)
Before adjusting ISC actuator you must first check the minimum idle speed to be within specifications. Refer to SPECIFICATIONS/IDLE SPEED. (ISC actuator must have vacuum applied so that it is not contacting the throttle lever.) See image VIEW A.
Remove vacuum hose on ISC actuator on warm engine.
Adjust ISC actuated idle speed to 1300 +/- 50 rpm. See image VIEW B.
Install vacuum hose.
In the event the vacuum can is leaking and not holding vacuum and you're unable to source another. You'll need to get at the 'Idle adjustment screw' that is covered by GM on the front side of the TBI. Turn it open roughly 1 turn. This will open the throttle blade slightly. The IAC will/should make up the difference.
Prior to doing this you must make certain that the min idle speed is set first.
