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INSPECTION PROCEDURE 7: Droning Noise: Diagnosis

WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
  1. STEP 1. Check the oil pump or oil pump bracket installation. 

    Q: Is the oil pump or the oil pump bracket installation correct? 

    YES  : Go to Step 2.

    NO  : Repair it. Then go to Step  3.

  2. STEP 2. Check the oil pump for damage. 
    NOTE: If a slight "beat noise" is produced by the oil pump when the steering wheel is turned fully and held in that position, this is not a malfunction.

    Q: Is there damage? 

    YES  : Replace the oil pump. Then go to Step 3.

    NO  : Go to Step 3.

  3. STEP 3. Retest the system. 

    Confirm that no noise is generated.

    Q: Is there noise? 

    YES  : Repeat from Step  1.

    NO  : The procedure is complete.

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