The EGR Valve recirculates a portion of the exhaust gas back to the engine cylinders which is monitored by the EGR Pressure Feedback Sensor. The EGR system also helps in fuel economy of the vehicle and as a side effect, reducing atmospheric pollution and hydrocarbon emissions. Having problems with your EGR Valve may also cause you to fail emissions inspection.
The EGR Pressure Feedback Sensor can easily be found near the EGR Valve and can usually be accessed by removing the EGR cover on your Mustang, Windstar, Taurus, Thunderbird, E250, E-350.
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