Idle Speed: Adjustments
Idle Speed AdjustmentAdjust the idle speed using the Honda PGM Tester procedure if possible. If not, use the following procedure:
NOTE:
- Leave the IAC valve connected.
- Before setting the idle speed, check these items:
- The MIL has not been reported on.
- Ignition timing
- Spark plugs
- Air cleaner
- PCV system
- On Canadian models, press the parking brake pedal. Start the engine, then check that the headlights are off.
1. Disconnect the EVAP canister purge valve 2P connector.
2. Connect a tachometer.
3. Start the engine. Hold the engine at 3,000 rpm with no load (transmission in Park or neutral position) until the radiator fan comes on, then let it idle.
4. 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 Park or neutral)
5. Adjust the idle speed, if necessary, by turning the idle adjusting screw (A) 1/4-turn clockwise or counterclockwise.
NOTE: Do not turn the idle adjusting screw more than 1/4-turn without checking the idle speed.
6. After turning the idle adjusting screw 1/4-turn, check the idle speed again. If it is out of spec, turn the idle adjusting screw 1/4-turn again.
7. Allow the engine to idle for one minute with the heater fan switch at HI and air conditioner on, then check the idle speed.
Idle speed should be: 750 ± 50 rpm (in Park or neutral)
NOTE:
- Do not turn the idle adjusting screw when the air conditioner is on.
- If the idle speed is not within specification, see the Symptom Troubleshooting Index. Symptom Related Diagnostic Procedures
8. Reconnect the EVAP canister purge valve 2P connector.