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Home >> Acura >> 2000 >> 1.6EL RS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Idle Control System >> Idle Speed Setting >> Inspection/Adjustment
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Idle Speed Setting: Inspection/Adjustment

M/T: 

NOTE:
  • Before setting the idle speed, check the following items:
    • The MIL has not been reported on.
    • Ignition timing
    • Spark plugs
    • Air cleaner
    • PCV system
  • Pull the parking brake lever up. Start the engine, then check that the headlights are off.
  1. Start the engine. Hold the Engine at 3,000 rpm with no load (transmission in neutral) until the radiator fan comes on, then let it idle.
  2. Connect a tachometer.
  3. Disconnect the IAC valve connector.
    Fig 1: Identifying IAC Valve Connector
    G06289471Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. If the engine stalls, restart the engine with the accelerator pedal slightly depressed. Stabilize the rpm at 1,000, then slowly release the pedal until the engine idles.
  5. Check idling in no-load conditions: headlights, blower fan, rear defogger, radiator fan, and air conditioner are not operating.

    Idle speed should be: 

    450 ± 50 rpm 

    Adjust the idle speed, if necessary, by removing the cap and turning the idle adjusting screw.

    NOTE: After adjusting the idle speed in this step, recheck the ignition timing. If it is out of spec, go back to step  4.
    Fig 2: Turning Idle Adjusting Screw
    G06289472Courtesy of AMERICAN HONDA MOTOR CO., INC.
  6. Turn the ignition switch OFF.
  7. Reconnect the 2P connector on the IAC valve, then do the ECM reset procedure.
  8. Restart and idle the engine with no-load conditions for one minute, then check the idle speed.
    NOTE: Pull the parking brake lever up. Start the engine, then check that the headlights are off.

    Idle speed should be: 

    750 ± 50 rpm 

  9. Idle the engine for one minute with headlights (Low) ON, and check the idle speed.

    Idle speed should be: 

    750 ± 50 rpm 

  10. Turn the headlights off. Idle the engine for one minute with heater fan switch at HI and air conditioner on, then check the idle speed.

    Idle speed should be: 

    810 ± 50 rpm 

    NOTE: If the idle speed is not within specification, see SYMPTOM CHART on .

A/T: 

Adjust the idle speed using a Honda PGM Tester if possible. If not, use the following procedure:

NOTE:
  • Leave the IAC valve connected.
  • Before setting the idle speed, check the following items:
    • The MIL has not been reported on.
    • Ignition timing
    • Spark plugs
    • Air cleaner
    • PCV system
  1. Connect a tachometer.
  2. Start the engine. Hold the engine at 3,000 rpm with no load (transmission in [N] or [P] position) until the radiator fan comes on, then let it idle.
  3. Check the idle speed with no-load conditions: headlights, blower fan, rear defogger, radiator fan, and air conditioner are not operating.

    Idle speed should be: 

    750 ± 50 rpm (in [N] or [P] position) 

  4. Adjust the idle speed, if necessary, by removing the cap and turning the idle adjusting screw 1/2-turn clockwise or counterclockwise.
    Fig 3: Turning Idle Adjusting Screw
    G06289473Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. After turning the idle adjusting screw 1/2-turn, check the idle speed again. If it is out of spec, turn the idle adjusting screw 1/2-turn again.
    NOTE: Do not turn the idle adjusting screw more than 1/2-turn without checking the idle speed.
  6. Idle the engine for one minute with heater fan switch at HI and air conditioner on, then-check the idle speed.

    Idle speed should be: 

    810 ± 50 rpm (in [N] or [P] position) 

    NOTE:
    • Do not turn the idle adjusting screw when the air conditioner is on.
    • If the idle speed is not within specification, see SYMPTOM CHART on .
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