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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 166 (ENGINE CONTROLS - 3.5L (L66) INTRODUCTION)REPAIR INSTRUCTIONSIDLE LEARN PROCEDURENOTES
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Idle Learn Procedure: Notes

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Notes
WARNING: This page is about a different car, the 2005 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install a scan tool.
  2. Diagnose and repair any DTCs before proceeding with this procedure. Refer to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information for the applicable DTC that set.
  3. Ensure that all electrical loads and accessories are OFF.
  4. Turn OFF the air conditioning.
  5. Ensure that the vehicle is in PARK or NEUTRAL.
  6. Turn ON the ignition.
  7. Clear the DTC information with the scan tool.
  8. Wait 5 seconds and start the engine.
  9. Operate the engine with no load at 3,000 RPM until the ECT reaches 90°C (194°F).
    10. IMPORTANT: If the engine cooling fan turns ON during the idle portion of this procedure, do not include the fan run time in the total idle time.
  10. Let the engine idle with the THROTTLE CLOSED and the engine cooling fan OFF, for a total of 5 minutes.
  11. The PCM has a new learned idle position.
  12. The idle learn procedure is required when the following service procedures have been performed:
    • The throttle body assembly is replaced
    • The throttle valve is cleaned-Deposits can build up in the throttle body requiring periodic cleaning of the throttle valve and throttle bore area. Refer to Throttle Body Service  .
    • The Clear DTCs function has been performed
    • The PCM has been programmed.
    • The PCM is replaced
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.