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:

    Removal
    1. Remove the A/C compressor (19703). For additional information, refer to Air Conditioning (A/C) Compressor-3.8L or Air Conditioning (A/C) Compressor-4.6L in this section. 2. Remove the bolt. 1. Hold the A/C disc and hub assembly (19D786) with the special ...

    System Air Flow Description
    MAX A/C When MAX A/C is selected: The air inlet door vacuum control motor is at full vacuum, closing off outside air and admitting only recirculated air. The panel/defrost door vacuum control motor is at full vacuum and the panel/floor door vacu ...

    Pinpoint Tests - OSC Equipped Vehicles
    Special Tool(s) Breakout Box, EEC-V Control System 418-049 (T94L-50-EEC-V) or equivalent MLP-TR Cable 418-F107 (007-00111) or equivalent Worldwide Diagnostic System (WDS) 418-F224 New Generation STAR (NGS) T ...