LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1678 (Steering System - Hydraulic Power Assist Steering (HPAS)) >> Diagnosis And Testing >> Steering System >> Component Tests >> Steering Gear Grunt/Shudder Test

Steering Gear Grunt/Shudder Test

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start and run the vehicle to operating temperature.
  2. Using the scan tool, set engine idle speed to 1,200 rpm.
  3. Rotate the steering wheel to the RH stop, then turn the steering wheel 90 degrees back from that position. Slowly turn the steering wheel back and forth approximately one-twelfth of a full turn.
    NOTE: Do not hold the steering wheel against the stops for an extended amount of time. Damage to the power steering pump may occur.
  4. Turn the steering wheel another 90 degrees. Slowly turn the steering wheel back and forth approximately one-twelfth of a full turn.
  5. Repeat the test with the power steering fluid at different temperatures.
  6. If a light grunt is heard, or a low (50-200 Hz) shudder is present, this is a normal steering system condition.
  7. If a loud grunt is heard, or a strong shudder is felt, purge the power steering system. Refer to POWER STEERING SYSTEM PURGING . If a loud grunt or strong shudder still exists, check the power steering lines/hoses for restrictions or damage and repair as necessary. Refer to POWER STEERING . If the lines/hoses are OK, install a new steering gear. Refer to POWER STEERING .
scientia non olet · About LEMON Manuals