my Ford Mustang S550 (2015-2023) has poor acceleration what could be the cause

Solution

1. Preparation

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

2. Inspect and Clean Air Intake

• Remove the air filter housing.
• Inspect the air filter for dirt and replace if necessary.
• Clean the throttle body using throttle body cleaner.
• Reassemble the air intake system securely.

3. Fuel System Inspection

• Locate the fuel pressure test port on the fuel rail.
• Attach a fuel pressure gauge and turn the ignition to the ON position (do not start the engine).
• Check if the fuel pressure is within the manufacturer's specifications (typically 30-50 psi for Mustangs).
• Replace the fuel filter if pressure is low and inspect fuel lines for leaks.

4. Ignition System Check

• Remove spark plug wires and inspect for wear or damage.
• Replace spark plugs if worn or fouled (use OEM recommended types).
• Test ignition coils for proper operation with a multimeter (check for resistance within specified ranges).

5. Exhaust System Evaluation

• Inspect the exhaust system for any visible damage or blockage.
• If applicable, check for a faulty catalytic converter by observing back pressure (should not exceed 1 psi at idle).
• Replace any damaged components, including mufflers or catalytic converters.