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Pinpoint Test B: Steering Is Very Difficult/Very Easy

  1. B1 CHECK THE STEERING COLUMN BEARINGS AND THE INTERMEDIATE SHAFT 
    NOTE: Be sure to keep the clockspring centered when disconnecting the intermediate shaft. Refer to SUPPLEMENTAL RESTRAINT SYSTEM .
    • Check the steering column and intermediate shaft for grounding.
    • Disconnect the steering column intermediate shaft at the steering column.
    • Verify that the intermediate shaft universal joints do not bind and move freely and that the steering column bearing rotates freely.
    • Are the steering column bearings and intermediate shaft universal joints OK? 
    • Yes  : GO to B2.
    • No  : If the steering column or the intermediate shaft is grounding, REPAIR as necessary. TEST the system for normal operation.

      If the steering column bearings or the intermediate shaft are binding, INSTALL a new intermediate shaft or steering column. REFER to STEERING COLUMN . TEST the system for normal operation.

  2. B2 CHECK THE FRONT BALL JOINTS AND UPPER STRUT BEARINGS 
    • Verify that the front ball joints and upper strut bearings move freely and are not binding or sticking. Refer to SUSPENSION SYSTEM-GENERAL INFORMATION for the suspension diagnosis.
    • Are the front ball joints and upper strut bearings OK? 
    • Yes  : GO to B3.
    • No  : INSTALL new ball joints or upper strut bearings as necessary. REFER to FRONT SUSPENSION . TEST the system for normal operation.
  3. B3 MONITOR ENGINE RPM CHANGES 
    NOTE: Make sure that the vehicle is on a flat dry surface.
    • Key in START position.
      • CAUTION: Do not hold the steering wheel at the stops for an extended amount of time. Damage to the power steering pump can occur.
    • Turn the steering wheel once to the left stop position and then to the right stop position.
    • Note the engine rpm during the turns.
    • Does the engine rpm change when turning the steering wheel? 
    • Yes  : If no power steering assist is present and the engine rpm changes, INSTALL a new steering gear. REFER to STEERING GEAR . TEST the system for normal operation.

      If left-to-right variation is present, INSTALL a new steering gear. REFER to STEERING GEAR . TEST the system for normal operation.

      If excessive effort is required in one or both directions, INSTALL a new power steering pump. REFER to POWER STEERING PUMP . TEST the system for normal operation.

    • No  : CARRY OUT the POWER STEERING PUMP FLOW AND PRESSURE TEST .
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