Pinpoint Test F: The Generator Is Noisy
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. 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 INSPECTION AND VERIFICATION for 2.5L engines, INSPECTION AND VERIFICATION for 3.0L engines or INSPECTION AND VERIFICATION for hybrid engines.
- 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 BELT IDLER PULLEY for 2.5L engines, REMOVAL AND INSTALLATION for 3.0L engines or ACCESSORY DRIVE BELT TENSIONER for hybrid engines 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 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: INSTALL a new generator. REFER to the GENERATOR - 2.5L or GENERATOR - 3.0L .
- No: REFER to DIAGNOSIS AND TESTING to diagnose the source of the engine noise.