A DPFE sensor is short for "delta pressure feedback of EGR" and monitors changes in the EGR system's pressure. The EGR, short for "exhaust gas recirculation," functions to suck back gases that have been exhausted by the engine to reburn them. This process reduces pollutants emitted by cars.
The DPFE sensor is connected to the EGR through two tubes. These tubes become pressurized when gas flows through the EGR at which point any difference in pressure is recorded by the DPFE. By measuring pressure differentials, the DPFE can calculate how much exhaust gas is currently in the system. A failure in the DPFE sensor usually results in improper data being processed.Learn More
A vehicle's speed sensor is a monitoring device that measures the output of a transmission or transaxle in terms of wheel speed. This information is used by the engine control module to adjust the automobile's performance automatically in order to achieve optimum levels.Full Answer >
A crankshaft position sensor costs between $68 and $130. The exact cost depends on where the part is purchased and the make and model of the car.Full Answer >
Crankshaft sensors are located in the crank pulley, flywheel, camshaft or directly on the crankshaft. Crankshaft position sensors, which ensure that the vehicle starts and remains running, are one of the most important components of an engine.Full Answer >
An air charge temperature sensor is a device inside the engine that monitors the temperature of the air going into the engine. In cars made after 1995, this part is called the intake air temperature sensor. The sensor sends temperature data to the car engine's computer for air density estimations used to maintain a proper mixture of air and fuel.Full Answer >