Shop Ford Mustang Exhaust Gas Recirculation Valve Replacement Cost & Ford Mustang EGR Locate Ford Mustang Exhaust Gas Recirculation Valve. Maintaining the EGR (Exhaust Gas Recirculation) system in your Ford Mustang is essential for optimal performance and longevity. Regularly check for signs of clogging or malfunction, such as rough idling or a decrease in fuel economy, which may indicate the need for replacement. To extend its lifespan, ensure the EGR valve is clean and functioning correctly by following the manufacturer?s maintenance schedule. When selecting a new EGR valve, consider the two main types available?vacuum operated and electronic?each engineered with features for precise exhaust control. Opt for high-quality materials and consult an installation guide or professional to ensure proper setup, keeping your Mustang running smoothly and efficiently.