Idle Speed: Testing and Inspection
Idle Speed InspectionNOTE:
- 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
- On Canadian models, press the parking brake pedal. Start the engine, and make sure the headlight are off.
1. Disconnect the evaporative emission (EVAP) canister purge valve 2P connector.
2. Connect the HDS to the data link connector (DLC) (A) 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.
Idle speed should be: 730 ± 50 rpm (in Park or neutral)
5. Let the engine idle for 1 minute with the heater fan switch on HI and air conditioner on, then check the idle speed.
Idle speed should be: 730 ± 50 rpm (in Park or neutral)
NOTE: If the idle speed is not within specification, go to the Symptom Troubleshooting Index. Symptom Related Diagnostic Procedures
6. Reconnect the EVAP canister purge valve 2P connector.