ANSWERS: 2
  • EGR Valve Position sensor (EVP) The EGR Valve Position (EVP) sensor monitors the position of the EGR valve pintle. The EVP sensor converts the mechanical movement of the pintle into an electrical voltage signal which is relayed to the PCM. The EVP sensor is a linear potentiometer in which resistance varies with the EGR valve pintle movement.Voltage is fed to the EVP by the signal return circuit. As the EGR is opened the EVP directs more voltage to the EEC and less down the voltage reference circuit. The EVP sensor provides the PCM with information on EGR flow and EGR system failures. The EVP should read between 0.24 and 0.67volts at idle with a closed EGR valve. Source: http://fordfuelinjection.com/index.php?p=35
  • evp is Electronic Voice Phenomenon which is when paranormal sounds are heard on a recorder, but not heard by the ear

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