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Pinpoint Test B: Unusual Starter Noise

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
  1. B1 CHECK THE STARTER MOUNTING 
    • Inspect the starter motor mounting bolts and brackets for looseness.
    • Is the starter motor mounted correctly? 
    1. YES  : Go to  B2.
    2. NO  : INSTALL the starter motor correctly. REFER to Starter Motor - 2.3L  or Starter Motor - 3.0L . TEST the system for normal operation.
  2. B2 CHECK FOR ENGINE NOISE 
    • Turn the ignition switch to the OFF position.
    • Connect a fused jumper wire from the B-terminal to the S-terminal of the starter motor. Engage the starter motor and verify that the noise is due to the starter operation.
    • Is the noise due to the starter motor engagement? 
    1. YES  : Go to  B3.
    2. NO  : REFER to ENGINE SYSTEM - GENERAL INFORMATION article to continue the diagnosis.
  3. B3 CHECK FOR UNUSUAL WEAR 
    1. YES  : INSTALL a new flywheel ring gear. EXAMINE the starter pinion teeth. If damaged, INSTALL a new starter motor. REFER to Starter Motor - 2.3L  or Starter Motor - 3.0L . TEST the system for normal operation.
    2. NO  : INSTALL a new starter motor. REFER to Starter Motor - 2.3L  or Starter Motor - 3.0L . TEST the system for normal operation.
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