Diagnostic Routine D

2012 Ford Explorer FWD V6-3.5LSECTION Diagnostic Routine D



Diagnostic Routine D

Diagnostic Overview

Unusual Starter Noise

Normal Operation and Fault Conditions

Correct starter operation relies on correct mounting of the starter to the engine, alignment of the starter ring gear to the flywheel and correct functioning of the starter assembly (internal gears, bearings).

Visual Inspection and Diagnostic Pre-checks

- Inspect the starter motor.

- Inspect the starter motor mounting.

Pinpoint Test

1. CHECK THE STARTER MOUNTING

1. Inspect the starter mounting bolts for looseness.

Is the starter motor mounted correctly?






2. CHECK FOR STARTER NOISE

1. Ignition OFF.

2. Connect a remote starter switch between the starter solenoid C197A-1 ("B" terminal) and C197B-1 ("S" terminal).

3. Engage the starter and verify the noise is due to starter operation.

Is the noise due to the starter engagement?





RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.