Idle Speed: Inspection

NOTE:

Before checking the idle speed, check these items:
- The malfunction indicator lamp (MIL) has not been reported on, and there are no DTCs.
- Spark plugs
- Air cleaner
- PCV system
Apply the parking brake.

Idle Speed - Inspect

1. Start the engine. Hold the engine speed at 3, 000 RPM without load (in P or N) until the radiator fan comes on, then let it idle.

2. Check the idle speed under no load conditions: headlights, blower fan, radiator fan, audio system, and air conditioner off.

Idle speed should be:

6-Speed A/T:
680 ± 50 RPM (in P or N)

9-Speed A/T:
'16-18 680 ± 50 RPM (in P or N)
'19-21 710 ± 50 RPM (in P or N)

3. Let the engine idle for 1 minute with high electric load (A/C on, temperature set to max cool, blower fan on high, headlights on high beam).

Idle speed should be:

6-Speed A/T:
680 ± 50 RPM (in P or N)

9-Speed A/T:
'16-18 680 ± 50 RPM (in P or N)
'19-21 710 ± 50 RPM (in P or N)

NOTE: If the idle speed is not within specification, do the PCM Idle Learn Procedure . If the idle speed is still not within specification, go to the Fuel and Emissions Systems Symptom Troubleshooting Index .