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Home >> Acura >> 2003 >> RSX L4-2.0L >> Repair and Diagnosis >> Maintenance >> Tune-up and Engine Performance Checks >> Idle Speed >> Testing and Inspection
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Idle Speed: Testing and Inspection

Idle Speed Inspection

NOTE:
- Leave the Idle Air Control (IAC) valve connected.
- Before checking the idle speed, check these items:
- The Malfunction Indicator Lamp (MIL) has not been reported on.
- Ignition timing
- Spark plugs
- Air cleaner
- PCV system

- Pull the parking brake lever up. Start the engine, and make sure the headlights are off.

1. Disconnect the evaporative emission (EVAP) canister purge valve 2P connector.




2. Connect a tachometer (A) to the test tachometer connector (B), or connect the Honda PGM Tester (A) or an OBD II scan tool to the Data Link Connector (DLC) (B) located under the driver's side of the dashboard.
3. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.




4. Check the idle speed with no-load conditions: headlights, blower fan, radiator fan, and air conditioner off.




5. Let the engine idle for 1 minute with the heater fan switch on HI and air conditioner on, then check the idle speed.
6. Reconnect the EVAP canister purge valve 2P connector.
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