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Curb Idle Speed Check

  1. Ensure engine is at operating temperature and all accessories are off. Place transmission in Neutral and front wheels are in a straight-ahead position.
  2. Check ignition timing and adjust if necessary. Run engine at 2000-3000 RPM for more than 5 seconds. Allow engine to idle for 2 minutes. Check idle speed. Refer to IDLE SPEED SPECIFICATIONS  . If idle speed is not within specification, diagnosis of Idle Speed Control (ISC) motor is necessary.
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