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Pinpoint Test C: Unusual Starter Noise

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  1. C1 CHECK THE STARTER MOTOR MOUNTING 
    • Inspect the starter motor mounting bolts for looseness.
    • Is the starter motor mounted correctly? 
    • Yes  : GO to C2.
    • No  : REINSTALL the starter motor correctly. REFER to STARTER MOTOR .
  2. C2 CHECK FOR ENGINE NOISE 
    • Ignition OFF.
    • Connect a remote starter switch between the starter solenoid B- and S- terminals.
      Fig 1: Connecting Remote Starter Switch Between Starter Solenoid B- And S- Terminals
      G06139768Courtesy of FORD MOTOR CO.
    • Engage the starter motor and verify the noise is due to the starter operation.
    • Is the noise due to the starter motor engagement? 
  3. C3 CHECK FOR UNUSUAL WEAR 
    • Remove the starter motor. Refer to STARTER MOTOR .
    • Inspect the ring gear for damaged or worn teeth.
    • Is the noise due to ring gear tooth damage? 
    • Yes  : INSTALL a new flexplate. EXAMINE the starter pinion teeth. If damaged, INSTALL a new starter motor. TEST the system for normal operation.
    • No  : INSTALL a new starter motor. REFER to STARTER MOTOR . TEST the system for normal operation.
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