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Home >> Hyundai >> 2010 >> Elantra GLS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC P0507: Idle Air Control System-RPM Higher than Expected >> Inspection Repair >> System Inspection

System Inspection

  1. Visually/physically inspect the following items. Repair or adjust as necessary and go to next step.
    • Check that the Accelerator Cable is not sticking or moving sluggishly.
    • Check Accelerator Cable free play [0.040~0.120 in. (1.0~3.0 mm)].
  2. Remove Intake Hose and inspect Throttle Plate for excessive carbon deposits.
  3. Is Throttle Plate being held open with excessive carbon deposits?

    YES 

    NO 

    • Go to next step as below
    • Air Leakage Inspection 
    1. Visually/physically inspect the air leakage in intake/exhaust system as following items,
      • Check for throttle Plate being held open with excessive carbon deposits
      • Vacuum hoses for splits, kinks and improper connections.
      • Throttle body gasket
      • Positive crankcase ventilation valve for improper installation, damaged o-rings and malfunctioning.
      • Gasket between intake manifold and cylinder head
      • Seals between intake manifold and fuel injectors
      • Exhaust system between HO2S and Three way catalyst for air leakage
    2. Was a problem found in any of the above areas?

      YES 

      NO 

      • Go to next step as below