Pinpoint Test F: The Generator Is Noisy

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

F1 CHECK FOR ACCESSORY DRIVE BELT NOISE AND LOOSE MOUNTING BRACKETS
- Ignition OFF.
- Check the accessory drive belt and tensioner for damage and correct installation. Refer to ACCESSORY DRIVE .
- Check the accessory mounting brackets and generator pulley for looseness or misalignment.
- Is the accessory drive OK?
- Yes : GO to F2.
- No : REPAIR as necessary. REFER to ACCESSORY DRIVE for diagnosis and testing of the accessory drive system. TEST the system for normal operation.
F2 CHECK THE GENERATOR MOUNTING
- Check the generator mounting for loose bolts or misalignment.
- Is the generator mounted correctly?
- Yes : GO to F3.
- No : REPAIR as necessary. TEST the system for normal operation.
F3 CHECK THE GENERATOR FOR MECHANICAL NOISE
- With the engine running, use a stethoscope or equivalent listening device to probe the generator and the accessory drive area for unusual mechanical noise.
- Is the generator the noise source?
- Yes : For 3.7L manual transmission, CARRY OUT the GENERATOR CLUTCH . If the generator clutch tests OK, INSTALL a new generator. REFER to GENERATOR - 3.7L .
  For all others, INSTALL a new generator. Refer to GENERATOR - 3.7L , GENERATOR - 5.0L or GENERATOR - 5.8L (4V) . DTCs.
- No : REFER to ENGINE SYSTEM - GENERAL INFORMATION to diagnose the source of the engine noise.