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Home >> Suzuki >> 1994 >> Swift GA, 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> Adjustment >> Engine Controls - Adjustments - 1.3L DOHC >> Idle Speed & Mixture >> Idle Speed
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Idle Speed

NOTE: DO NOT  adjust idle speed in areas above 8200 ft. elevation.
IDLE SPEED SPECIFICATIONS (1)

Application RPM
With A/C Off 800-900
With A/C On (2) 850-950
(1) Transaxle or transmission in Neutral or Park.
(2) A/C idle speed is adjusted by rotating adjusting screw on A/C Vacuum Switching Valve (VSV).
IAC DUTY AT SPECIFIED IDLE SPEED (1)

Application Percent
DOHC 30-40
(1) See the IDLE SPEED SPECIFICATIONS  table.
NOTE: Specified values used for this inspection and adjustment vary depending on type of ECM. Type of ECM can be identified by last digit of ECM part number. Last digit will be "0" or a number other than "0".
Fig 1: Identifying Idle Speed Adjustment Screw
G92D26099Courtesy of SUZUKI OF AMERICA CORP.
  1. 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.
  2. 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. See the IDLE SPEED SPECIFICATIONS  and IAC DUTY AT SPECIFIED IDLE SPEED  tables.
  3. 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.
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