Pinpoint Test F: The Generator Is Noisy
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. 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 the appropriate service information in DESCRIPTION AND OPERATION (2.5L), DESCRIPTION AND OPERATION (3.0L) and ACCESSORY DRIVE BELT - 3.5L -- FUSION & MKZ (EXCEPT HYBRID) (3.5L) for the procedure.
- 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 the appropriate service information in DIAGNOSIS AND TESTING (2.5L), ACCESSORY DRIVE BELT - 3.0L (4V) -- FUSION & MILAN (EXCEPT HYBRID) (3.0L) and ACCESSORY DRIVE BELT - 3.5L -- FUSION & MKZ (EXCEPT HYBRID) for the procedure. 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 GENERATOR - 2.5L , GENERATOR - 3.0L+ or GENERATOR - 3.5L in this service information. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
- No : REFER to ENGINE SYSTEM - GENERAL INFORMATION article to diagnose the source of the engine noise.