why does my Ford Mustang S550 (2015-2023) make a grinding noise when starting

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the ignition is off.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect and Clean Battery Connections

• Remove the positive (+) and negative (-) terminals from the battery.
• Clean the terminals and battery posts with a wire brush to remove corrosion.
• Reconnect the terminals, ensuring they are tight.

3. Remove the Starter Motor

• Locate the starter motor (typically found near the transmission bell housing).
• Disconnect the electrical connections from the starter (note their positions for reinstallation).
• Remove the mounting bolts using a socket set.
• Carefully pull the starter motor out of its housing.

4. Inspect the Starter Gear and Flywheel

• Check the starter gear (bendix) for wear or damage.
• Inspect the flywheel for any missing or damaged teeth.
• If either component is damaged, replace the starter motor or flywheel as necessary.

5. Install the New or Repaired Starter

• Position the starter motor back into its housing and secure it with the mounting bolts (torque to manufacturer's specifications).
• Reconnect the electrical connections to the starter motor.
• Reconnect the negative battery terminal.