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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 163 (Charging System - General Information) >> Diagnosis And Testing >> Charging System >> Pinpoint Tests >> Pinpoint Test F: The Generator is Noisy >> Testing

Pinpoint Test F: The Generator is Noisy: Testing

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
  1. F1 CHECK FOR ACCESSORY DRIVE NOISE AND MOUNTING BRACKETS 
    • Key in OFF position.
    • Check the accessory drive belt 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. TEST the system for normal operation.
  2. F2 CHECK THE GENERATOR FOR EXCESSIVE ELECTRICAL NOISE 
    • Disconnect: Generator C102b.
    • Key in START position.
    • With the engine running, determine if the generator is still noisy.
    • Is the noise still present? 
    • Yes  : GO to F3.
    • No  : INSTALL a new generator. REFER to GENERATOR AND REGULATOR . TEST the system for normal operation.
  3. F3 CHECK THE GENERATOR FOR MECHANICAL NOISE 
    • Turn all the accessories off. With the engine running, use a stethoscope or equivalent listening device to probe the generator for unusual mechanical noise.
    • Is the generator the noise source? 
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