Ford Mustang Service Manual: Component Tests

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

The accessory drive:


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

Symptom Chart


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.
    Inspection and Verification
    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 Cracki ...

    Accessory Drive Belt - 3.8L
    Accessory Drive (Description and Operation) Component Locations- 3.8L   Component Locations-4.6L   ...

    Other materials:

    Axle Shaft
    Rear Drive Axle and Differential   The axle housing assembly consists of a cast center section with two steel tube assemblies and a stamped differential housing cover (4033). The differential housing cover uses silicone sealant as a gasket. ...

    Spring - Cobra
    Rear Suspension (Description and Operation)   Item Part Number Description 1 18125 Rear shock absorber 2 - Rear axle driveline vibration damper 3 5A649 Rear lower suspension arm and bushing (common LH and RH) ...

    Crankshaft Position (CKP) Sensor - 3.8L
    Electronic Engine Controls (Description and Operation) The electronic engine controls consist of the following: powertrain control module (PCM) throttle position (TP) sensor idle air control (IAC) valve engine coolant temperature (ECT) sensor ...