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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1546 (Transfer Case - Four Wheel Drive (4WD) Systems -- F250-F550 Super Duty) >> Diagnosis And Testing >> Four Wheel Drive (4WD) Systems - Mechanical Shift >> Symptom Chart - Mechanical Shift

Symptom Chart - Mechanical Shift

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SYMPTOM CHART - MECHANICAL SHIFT

Condition Possible Sources Action
  • The instrument cluster 4x4 and Low Range indicators do not operate correctly/do not operate
  • Instrument cluster.
  • Circuitry.
  • Mode indication switch (MIS).
  • The vehicle does not shift between 2H and 4H modes correctly
  • Transfer case.
  • Transfer case shift lever.
  • Manual hublocks.
  • Circuitry.
  • The vehicle does not shift between 4H and 4L modes correctly
  • Transfer case.
  • Transfer case shift lever.
  • Transmission drag torque.
  • The 4x4 system jumps out of gear
  • Transfer case.
  • Transfer case shift lever.
  • Manual hublocks.
  • Straightline driveline wind-up
  • Tire inflation pressure.
  • Tire and wheel size.
  • Tire wear.
  • Axle ratio.
  • Clunking noise during engagement
  • Vehicle speed.
  • Torque to front axle.
  • MAKE SURE that the vehicle is shifted at a speed below 5 km/h (3 mph), all tires and wheels are the same size and that the inflation pressures are correct. Also, avoid shifting the transfer case while turning the vehicle.
  • Transfer case makes noise when driving
  • Tire inflation pressure.
  • Tire or wheel size.
  • MAKE SURE that all tires and wheels are the same size and that the inflation pressure are correct
  • Tire tread wear.
  • CHECK tire tread wear to see if there is more than 1.52 mm (0.06 in) difference in tread wear between front and rear. INTERCHANGE one front and one rear wheel. ROAD TEST again.
  • Internal components.
  • OPERATE the vehicle in all transmission gears. If there is noise with the transmission in NEUTRAL or in some gears and not others, REMOVE and REPAIR the transmission. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - TORQSHIFT . If there is noise in all gears, DISASSEMBLE the transfer case. REFER to TRANSFER CASE . CHECK the planetary gears, bearings, upper and lower drive sprockets and drive chain for damage. INSTALL new parts as necessary. TEST the system for normal operation.
  • Fluid level.
  • FILL the transfer case with automatic transmission fluid. REFER to TRANSFER CASE .
  • Unable to duplicate customer concern
  • 4x4 system and/or related components.
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