Ford Mustang (1999-2004) Service Manual: Symptom Chart

Condition Possible Sources Action
  • Traction-Lok does not work in snow, mud or on ice
  • Differential.
  • CARRY OUT the Traction- Lok Differential Operation Check in this section. REPAIR as necessary.
  • Lubricant leaking from the pinion seal, axle shaft oil seals
  • Vent.
  • Damage in the seal contact area or damaged or worn seal.
  • CLEAN the axle housing vent.
  • INSTALL a new seal if damage is found.
  • Differential side gears/pinion gears are scored
  • Insufficient lubrication.
  • Incorrect or contaminated lubricant type.
  • INSTALL new gears.
  • INSTALL new gears.
  • Axle overheating
  • Lubricant level too low.
  • Incorrect or contaminated lubricant type.
  • Bearing preload adjusted too tight.
  • Excessive gear wear.
  • Incorrect ring gear backlash.
  • CHECK the lubricant level.

    FILL the axle to specification.

  • INSPECT the axle for damage. REPAIR as necessary. CLEAN and REFILL the axle to specification.
  • CHECK the ring and pinion for damage. INSPECT the ring and pinion wear pattern.

    ADJUST the preload as necessary.

  • INSPECT all the axle gears for wear or damage. INSTALL new components as necessary.
  • INSPECT the ring gear for scoring. INSPECT the ring and pinion wear pattern.

    ADJUST the ring gear backlash as necessary.
  • Broken gear teeth on the ring gear or pinion
  • Overloading the vehicle.
  • INSTALL a new ring and pinion.
  • Axle shaft broken
  • Overloading the vehicle.
  • Misaligned axle shaft tube.
  • INSTALL a new axle shaft.
  • INSPECT the axle for damage. CHECK axle shaft tube alignment. INSTALL a new axle shaft
    Knock
    Knock, which can occur on all driving phases, has several causes including damaged teeth or gearset. In most cases, one of the following conditions will occur: 1. A gear tooth damaged on the drive s ...

    Component Tests
    Driveline Vibration An analysis of driveline vibration can also be conducted using the Vibration Analyzer; follow the manufacturer's directions. Driveline vibration exhibits a higher frequency and l ...

    Other materials:

    Trim Panel - Quarter, Convertible
    Special Tool(s) Safety Belt Bolt Bit 501-010 (T77L-2100-A) Removal and Installation 1. Lower the convertible top to the full down position. 2. Remove the rear seat cushion. 3. Remove the two bolts and the rear seat backrest. 4. Remove ...

    EGR System Components
      The EGR system returns a portion of the exhaust gas to the intake manifold to reduce the combustion temperature. This results in lower nitrous oxide formation. The powertrain control module (PCM) controls the EGR vacuum regulator solenoid . The EG ...

    Fog Lamps
    Refer to Wiring Diagrams Cell 86 , Fog Lamps for schematic and connector information. Special Tool(s) 73 III Automotive Meter or equivalent 105-R0057 Principles of Operation The fog lamps will only illuminate when the low beam or parking l ...