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The 2005 Ford Explorer 4.0 DPFE sensor is located behind the upper intake manifold, positioned between the firewall and engine block close to the EGR valve. This sensor, known as the Differential Pressure Feedback Exhaust Sensor (DPFE sensor), is a crucial component of the vehicle's EGR system. It is responsible for monitoring and measuring the pressure within the EGR valve to prevent any potential malfunctions or excessive exhaust entering the intake manifold simultaneously. Signs that indicate a faulty DPFE sensor include engine performance problems such as rough idling, power loss, failing an emissions test, and the illumination of the Check Engine Light.
The DPFE sensor for a 2005 Ford Explorer with a 4.0 engine is located behind the upper intake manifold, situated between the firewall and engine block near the EGR valve.