Concealment Plug Removal

Figure 2 - Removal Of Idle Stop Screw Plug.:

If present, remove idle stop screw plug by piercing it with an awl, then applying leverage.



NOTE: Minimum Idle Speed adjustments are set at the factory and MUST NOT be tampered with to alter minimum or maximum engine idle speed. Improper adjustment of the idle speed screw can cause false PCM codes, idle instability and automatic transaxle shift concerns, etc.


NOTE: Adjustments should be performed only when the throttle body has been replaced and/or when idle speed cannot be obtained. Engine should be at normal operating temperature (upper radiator hose is warm) before making adjustments.

NOTE: The idle stop screw is used to regulate minimum idle speed of the engine. On original equipment throttle bodies, it is adjusted at the factory, then covered with a plug to discourage unnecessary readjustment.

NOTE: On replacement throttle bodies, the idle stop screw is preset by the manufacturer and is covered with a plug.