Ford Mustang (1999-2004) Service Manual: Inspection and Verification

1. Verify customer concern by running the engine.

2. Inspect the drive belt for chunking, fraying and wear.

3. Check the drive belt for correct routing.

Drive Belt Cracking/Chunking/Wear

V Ribbed Serpentine Drive Belt With Cracks Across Ribs

V Ribbed Serpentine Drive Belt With Cracks Across Ribs

The accessory drive:

  • has a single serpentine drive belt.
  • has an automatic drive belt tensioner.
  • does not require adjustment.

V Ribbed Belt With Chunks of Rib Missing

V Ribbed Belt With Chunks of Rib Missing

Symptom Chart

Condition Possible Sources Action
  • Drive belt noise, chirping, flutter
  • Defective/worn drive belt.
  • Misaligned pulley.
  • Pulley runout.
  • Damaged accessories.
  • Fluid contamination of drive belt.
  • Damaged or worn drive belt tensioner
  • GO to Component Tests, Drive Belt, Noise/Flutter.
  • GO to Component Tests, Belt Tensioner, Automatic.
  • Premature drive belt wear
  • Defective drive belt.
  • Misaligned pulley.
  • Pulley runout.
  • Damaged accessories.
  • Incorrectly installed drive belt.
  • GO to Component Tests, Drive Belt Noise/Flutter and Drive Belt Misalignment diagnosis.
    Component Tests
    Drive Belt Noise/Flutter Drive belt chirp occurs due to pulley misalignment or excessive pulley runout. It can be the result of a damaged pulley or an incorrectly aligned pulley. To correct, determi ...

    Other materials:

    Noise, Vibration and Harshness (NVH) (Diagnosis and Testing)
    Special Tool(s) ChassisEAR 107-R2102 or equivalent Electronic Vibration Analyzer 100-F027 (014-00344) or equivalent EngineEAR 107-R2100 or equivalent Ultrasonic Leak Detector 134-R0135 or equivalent T ...

    Safety belt-minder
    This feature supplements the safety belt warning function by providing additional reminders by intermittently sounding a chime and illuminating the safety belt warning light when the driver’s or front passenger’s seat is occupied and the safety belt is unb ...

    Spark Plugs
    Special Tool(s) Remover, Spark Plug Wire 303-106 (T74P-6666A) Material Item Specification Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A or equivalent ESE-M1C171- A Removal and Installation CAUTION: ...