Pinpoint Test R: The Generator (S) Is Noisy
WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
- R1 CHECK THE DRIVE BELT AND MOUNTING BRACKETS
- Key in OFF position.
- Check the drive belt for damage and to verify correct installation; refer to ACCESSORY DRIVE .
- Check the generator mounting brackets for loose bolts or misalignment.
- Are the accessory drive and generator mounting brackets OK?
- Yes : GO to R2.
- No : REPAIR as necessary. TEST the system for normal operation.
- R2 CHECK THE GENERATOR PULLEY(S)
- Check for a bent, loose, or misaligned generator pulley(s).
- Are the generator pulley(s) OK?
- Yes : GO to R3.
- No : INSTALL a new pulley(s) as necessary. TEST the system for normal operation.
- R3 CHECK THE LOWER GENERATOR FOR ELECTRICAL NOISE
- Disconnect: Lower Generator C1251a.
- Key in START position.
- With the engine running, use a stethoscope or equivalent listening device to probe the lower generator for noise.
- Is the lower generator noisy?
- Yes : INSTALL a new lower generator. REFER to GENERATOR AND REGULATOR . TEST the system for normal operation.
- No : GO to R4.
- R4 CHECK THE UPPER GENERATOR FOR ELECTRICAL NOISE
- Key in OFF position.
- Disconnect: Upper Generator C102a.
- Key in START position.
- With the engine running, use a stethoscope or equivalent listening device to probe the upper generator for noise.
- Is the upper generator noisy?
- Yes : INSTALL a new upper generator. REFER to GENERATOR AND REGULATOR . CLEAR the DTCs. REPEAT the self-test. Test the system for normal operation.
- No : REFER to ENGINE SYSTEM-GENERAL INFORMATION to diagnose the source of the engine noise.