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Home >> Ford >> 2001 >> Excursion 7.3 F, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Charging System - Generators & Regulators - Dual Generators) >> System Tests >> Test J: Generator Noisy
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Test J: Generator Noisy

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Ford RV Cutaway, 2003 Ford Econoline, 2003 Ford E550 Super Duty, 2003 Ford E450 Super Duty, and 2003 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch to LOCK position. Check accessory drive belt for damage and correct installation. Check mounting brackets and pulleys for looseness and damage. If problem does not exist, go to next step. If problem exists, repair as necessary.
  2. Check generator installation. Ensure all fasteners are tight. If problem does not exist, go to next step. If problem exists, repair as necessary.
  3. Check for bent or misaligned pulleys. If problem does not exist, go to next step. If problem exists, repair as necessary.
  4. Disconnect upper generator 3-pin harness connector. Start engine and let idle. If noise still exists, go to next step. If noise does not still exist, replace upper generator. See UPPER GENERATOR  under REMOVAL & INSTALLATION.
  5. Turn ignition switch to LOCK position Disconnect lower generator 3-pin harness connector. Start engine and let idle. If noise still exists, go to next step. If noise does not still exist, replace lower generator. See LOWER GENERATOR  under REMOVAL & INSTALLATION.
  6. Turn ignition switch to LOCK position. Connect both generator harness connectors. Start engine and let idle. Turn all accessories off. Using a stethoscope, check both generators for unusual mechanical noise. If either generator is source of noise, replace appropriate generator. If neither generator is not source of noise, isolate noise and repair as necessary.
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