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Home >> Mitsubishi >> 2005 >> Lancer Evolution >> Repair and Diagnosis (Single Page) >> Steering >> Steering Column >> Power Steering -- Evolution >> Power Steering Diagnosis >> Symptom Procedures >> INSPECTION PROCEDURE 2: Difficult Steering Wheel Operation (Insufficient Power Assist) >> Diagnosis

INSPECTION PROCEDURE 2: Difficult Steering Wheel Operation (Insufficient Power Assist): Diagnosis

  1. STEP 1. Check the power steering oil pump drive belt tension. 

    Refer to DRIVE BELTS .

    Q: Is the power steering oil pump drive belt tension within the standard value? 

    • YES :  Go to Step 2.
    • NO :  Adjust the tension. (Refer to DRIVE BELTS ). Then go to  Step 9.
  2. STEP 2. Check the drive belt for damage. 

    Q: Is the drive belt damaged? 

    • YES :  Replace the drive belt. Then go to  Step 9.
    • NO :  Go to Step 3.
  3. STEP 3. Check the fluid level. 
    1. Park the vehicle on a flat, level surface, and then start the engine.
    2. Turn the steering wheel several times to raise the temperature of the fluid to approximately 50 - 60°C (122 - 140°F).
    3. With the engine running, turn the wheel all the way to the left and right several times.
    4. Check the fluid in the oil reservoir for foaming or milkiness. Check the difference of the fluid level when the engine is stopped, and while it is running.

    Q: Is the check result OK? 

    Fig 1: Checking Fluid Level - Inspection Procedure 2 (Engine Running And Engine Stopped)
    G02398772Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  4. STEP 4. Check each hose for crushing or twisting. 

    Q: Is any hose crushed or twisted? 

    • YES :  Repair or replace the hose. Then go to  Step 9.
    • NO :  Go to Step 5.
  5. STEP 5. Check for oil leaks. 

    Q: Are there oil leaks? 

    • YES :  Repair it. Then go to  Step 9.
    • NO :  Go to Step 6.
  6. STEP 6. Check the wheel alignment (camber and caster). 

    Refer to FRONT WHEEL ALIGNMENT CHECK AND ADJUSTMENT .

    Q: Is the alignment incorrect? 

    • YES :  Repair it. Then go to  Step 9.
    • NO :  Go to Step 7.
  7. STEP 7. Check the gear box rack piston seal for damage. 

    Q: Is there damage? 

    • YES :  Replace it. Then go to  Step 9.
    • NO :  Go to Step 8.
  8. STEP 8. Check for excessive tie rod end ball joint breakaway torque. 

    Refer to TIE ROD END BALL JOINT BREAKAWAY TORQUE CHECK .

    Q: Is there fault? 

    • YES :  Replace the part. Then go to Step 9.
    • NO :  Go to Step 9.
  9. STEP 9. Check the steering wheel operation. 

    Verify that the steering wheel operation is not difficult.

    Q: Is the steering wheel operation difficult? 

    • YES :  Repeat from  Step 1.
    • NO :  The procedure is complete.
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