How do you test the DPFE sensor on a Ford f150?
How to Test the DPFE Sensor
- Open the hood of the vehicle.
- Disconnect the two vacuum hoses from the sensor by giving them a firm tug.
- Turn the ignition key to the “On” position.
- Connect the negative (black) multimeter lead to a ground point, such as the negative battery terminal.
Can a DPFE sensor cause a misfire?
Can a DPFE sensor cause a misfire? When the DPFE Sensor starts failing, it gives the PCM bad information. This excessive amount of EGR combined with the air coming in via the throttle body leans out the fuel mixture, causing a lean misfire, which is the “stumble” or “hesitation” that is common as the DPFE Sensor fails.
How do you test a DPF differential pressure sensor?
If everything passes physical inspection, you can test the DPF differential pressure sensor using a multimeter set to 20V and a pressure gauge. With the battery on and engine off, connect the multimeter ground to the negative battery terminal and run a quick plausibility by checking the voltage of the battery.
What causes a DPFE sensor to melt?
As the pressure builds up, the engine exhaust temperature rises and will heat us the tubes that the DPFE registers and will cause it to melt.
What does DPFE stand for on a Ford?
Differential Pressure Feedback Electronic
DPFE (Differential Pressure Feedback Electronic) Sensors are an integral part of the EGR (Exhaust Gas Recirculation) System. The DPFE Sensor provides information to the Powertrain Control Module (PCM) to tell it how much exhaust gas is flowing through the system.
What happens when EGR valve goes bad?
If your EGR valve is stuck in the open position, it can allow too little or too much exhaust gas into the combustion chamber. This can throw off the air/fuel mixture inside (which needs to be perfect) and cause the engine to idle rough.