Idle Speed

NOTE: DO NOT adjust idle speed in areas above 8200 ft. elevation.

IDLE SPEED SPECIFICATIONS ⁽¹⁾

Application

RPM

With A/C Off

750-850

With A/C On

⁽²⁾ 950-1050

⁽¹⁾	Transaxle or transmission in Neutral or Park.

⁽²⁾	With auto. transmission in gear, idle RPM is 750-850.

IAC DUTY AT SPECIFIED IDLE SPEED ⁽¹⁾

Application

Percent

Sidekick

⁽¹⁾	See IDLE SPEED SPECIFICATIONS table.

Fig 1: Identifying Idle Speed Adjustment Screw

Courtesy of SUZUKI OF AMERICA CORP.

Idle speed is controlled by IAC valve and should not require adjustment. If idle speed needs to be changed, start engine and warm it to operating temperature. Turn all accessories off. Ensure all fuel and emission control system wire connectors and hoses are properly connected. Ensure accelerator cable has free play. Ensure air cleaner and ducts are properly installed and air filter element is in good condition.
Ensure ignition timing is correct. See IGNITION TIMING table under IGNITION TIMING. Connect terminal "B" (diagnosis switch) to terminal "D" (ground) using a service wire. See Figure . MIL (CHECK ENGINE light) should indicate Code 12. Attach duty meter to duty output terminal "F" and ground terminal "D". Remove idle speed adjusting screw protective cap from top of throttle body. See Fig 1 . Turn idle speed adjusting screw to obtain correct idle RPM. Refer to the appropriate IDLE SPEED SPECIFICATIONS table in this article and/or the IAC DUTY AT SPECIFIED IDLE SPEED tables.
On vehicles equipped with A/C, turn A/C switch to ON position and set fan switch to HIGH position. With A/C operating correctly, verify idle is 850-950 RPM and IAC duty is 30-40 percent. If adjustment is required, turn A/C Vacuum Switching Valve (VSV) adjusting screw to obtain correct idle. See IDLE SPEED SPECIFICATIONS table. Remove service wire, reinstall protective cap to throttle body and recheck idle speed.