why is my Ford Mustang S550 (2015-2023) fuel economy so poor

Solution

1. Preparation

• Gather required tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the battery to ensure safety during electrical inspections.

2. Check and Replace the Air Filter

• Locate the air filter housing and open it.
• Remove the existing air filter.
• Inspect for dirt or damage; replace if necessary.
• Install a new air filter, ensuring it is seated properly.

3. Clean the Throttle Body

• Remove the throttle body from its mounting.
• Use a throttle body cleaner and a soft cloth to remove carbon buildup.
• Reinstall the throttle body and torque bolts to manufacturer specifications.

4. Inspect and Clean Fuel Injectors

• Remove fuel injectors from the fuel rail.
• Use a fuel injector cleaner to clean each injector.
• Reinstall injectors and ensure proper seating and torque.

5. Test and Replace the Fuel Pump

• Connect a fuel pressure gauge to the fuel rail.
• Turn on the ignition to check for proper fuel pressure according to the specifications.
• If pressure is low, replace the fuel pump following the manufacturer’s service manual.

6. Tire Maintenance

• Check tire pressure using a tire pressure gauge and inflate to the recommended PSI.
• Inspect tires for wear and replace if necessary to ensure optimal fuel efficiency.