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Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 732 (Four Wheel Drive Systems) >> Diagnosis And Testing >> Four-Wheel Drive Systems - Electronic Shift >> Pinpoint Tests >> Pinpoint Test D: Straightline Driveline Wind-up >> Pinpoint Test D: STRAIGHTLINE Driveline Wind-Up

Pinpoint Test D: STRAIGHTLINE Driveline Wind-Up

WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: 4x4 high/low (4H/4L) is not intended for driving on hard/dry surfaces.
  1. D1 VERIFY THE CONCERN 
    • Drive the vehicle and shift from 4x4 Auto to 4H. There should be minimal wind-up in 4H mode during straight line maneuvers, (wind-up in turns is normal; 4x4 high/low is not intended for driving on hard/dry surfaces).
    • Is excessive wind-up present? 

    Yes  GO to D2.

    No  RETURN the vehicle to the customer. ADVISE about correct 4x4 system operation and normal vehicle behavior.

  2. D2 CHECK FOR MATCHING WHEEL AND TIRE SIZES 
    • Check the wheel and tire sizes.
    • Do the four wheel and tire sizes match? 

    Yes  GO to D3.

    No  ADVISE the customer that 4x4 systems require four matched, correctly inflated, correctly maintained tires to operate correctly.

  3. D3 CHECK TIRE WEAR 
    • Check each of the four tires for wear.
    • Are the four tires worn evenly? 

    Yes  GO to D4.

    No  ADVISE the customer that 4x4 systems require four matched, correctly inflated, correctly rotated tires to operate correctly.

  4. D4 CHECK TIRE INFLATION PRESSURE 
    • Check the inflation pressure in each tire. Refer to vehicle certification label.
    • Are the tire inflation pressures correct? 

    Yes  GO to D5.

    No  ADJUST the tire pressure as necessary. TEST the vehicle for normal operation. ADVISE the customer that 4x4 systems require four matched, correctly inflated, correctly maintained tires to operate correctly.

  5. D5 CHECK THE FRONT AND REAR AXLE RATIOS 
    • Check that front and rear axle ratios match. Refer to DRIVELINE SYSTEM .
    • Do the front and rear axle ratios match? 

    Yes  RETURN the vehicle to the customer and ADVISE about correct 4x4 usage and normal vehicle behavior.

    No  CHECK the vehicle identification label. INSTALL the correct axle(s). REFER to DRIVELINE SYSTEM .

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