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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Engine Mechanical (Service Information) - 2.5L) >> Engine Tune-Up >> Idle Speed Adjustment

Idle Speed Adjustment

WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect the inductive pick-up type tachometer to the high tension lead.
    NOTE:
    • The inductive pick-up type tachometer may indicate double engine speed.
  2. Connect SSTs  (WDS or equivalent) to data link connector.
  3. Start engine and idle it.
  4. Carry out self-test function.
  5. Turn the headlight switch to the passing position more than three times while each "passing" for 2 seconds.
  6. Make sure the engine speed is fixed.
    CAUTION:
    • The throttle adjusting screw is set at the factory and must not be adjusted. Any adjustment may affect engine performance.
  7. Adjust the idle speed to the following specifications by turning the air adjusting screw within 2 min  after the headlight switch is turned to passing position more than three times.
    Fig 1: Adjusting Air Adjustment Screw
    G01136315Courtesy of MAZDA MOTORS CORP.

    Specification 

    550-750 (650 +/- 100) RPM 

  8. Reinspect idle speed. See IDLE SPEED INSPECTION .
    • If not as specified, readjust idle speed after following harnesses.
    • From battery to combination switch
    • From combination switch to PCM
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