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Home >> Saturn >> 2005 >> Vue Red Line, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 3.5L (L66) Introduction >> Repair Instructions >> Idle Learn Procedure >> Idle Speed Inspection
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Idle Speed Inspection

  1. Install a scan tool.
  2. Ensure that all electrical loads and accessories are OFF.
  3. Turn OFF the air conditioning.
  4. Ensure that the vehicle is in PARK or NEUTRAL.
  5. Start and run the engine until the ECT is at least 80°C (176°F).
  6. Ensure that the scan tool data parameter Engine at Operating Temperature says YES.
  7. Observe that the engine speed is 730 RPM +/-50 RPM with the scan tool.
  8. Idle the engine for 1 minute with the AC ON and the blower motor operating on HIGH.
  9. Observe that the engine speed is 730 RPM +/-50 RPM with the scan tool.
  10. Compare the engine speed at idle with the scan tool to the following specifications:
    • All engine accessories OFF-730 RPM +/-50 RPM
    • Turn the AC ON and the heater fan on HIGH-730 RPM +/-50 RPM
  11. If the scan tool indicated that the engine idle was within the specified values, the idle speed is normal.
  12. If the scan tool indicated that the engine idle was more than or less than specified values, refer to Rough, Unstable, or Incorrect Idle and Stalling .
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