How does the dpfe sensor work in an EGR system?
Well, when gas passes through the EGR tube, the two tubes leading to the DPFE Sensor get pressurized. As this happens, a difference in pressure is created, wherein one tube has more pressure than the other one. The DPFE sensor registers this difference in pressure and can tell how much exhaust gas is flowing through the EGR system.
What to do if your dpfe sensor is bad?
Remove both hoses from the DPFE sensor then re-attach the hose that used to go to the EGR Valve, to the “Ref” hose port on the DPFE Sensor. Doing this sort of tricks the system so that instead of opening the EGR valve when the PCM sends the signal, it will now apply vacuum to the “Reference” sensor for the DPFE.
How does delta pressure feedback of EGR work?
However, the DPFE sensor monitors the pressure difference in the air and the amount of air entering the engine and gives feedback to the EGR system according to the readings, hence the name “Delta Pressure Feedback of EGR”. In a sense, the DPFE sensor informs the EGR system how much air to let in, taking into account the situation.
Where does the dpfe sensor come in a Ford F-Series?
Generally speaking, it is located on the car’s firewall. There’s another hose in there that goes to the EGR Valve. Now, the aforementioned vacuum pressure is used to open the EGR Valve which, in turn, allows exhaust gases to be pulled from the exhaust, past the DPFE tubes, and back into the intake manifold. So where does the DPFE sensor come in?
How is the dpfe sensor connected to the EGR valve?
Basically, follow the EGR pipe until you see 2 metal tubes next to each other split off from it, then follow those to the rubber hoses and those hoses to the DPFE sensor. The EGR Actuator is an electric device that allows small amounts of vacuum pressure to pass on to the EGR Valve.
What does vacuum pressure do to the dpfe sensor?
Vacuum pressure opens the EGR Valve, allowing exhaust gases to be pulled from the exhaust manifold, past the DPFE tubes, then back into the intake manifold. When gas flows through the EGR tube, the two tubes leading to the DPFE Sensor get pressurized.
How much does it cost to change the dpfe sensor?
Changing the DPFE Sensor (Delta/Differential Pressure Feedback EGR Sensor) Most shops in Dallas will charge $280 for parts and labor, but the Ford Factory pa… Changing the DPFE Sensor (Delta/Differential Pressure Feedback EGR Sensor) Most shops in Dallas will charge $280 for parts and labor, but the Ford Factory pa…
How can I block off air on my dpfe sensor?
A plastic golf tee, screwdriver bit or anything that fits snugly inside the tube to block off air will work as well: Work around #2: Take the hose off the EGR Valve like shown above, except then pull both hoses off the DPFE Sensor, and re-attach the hose that used to go to the EGR Valve, to the “Ref” hose port on the DPFE Sensor.
What are the symptoms of a failing EGR valve?
What are the symptoms of a failing EGR valve? A faulty EGR valve can cause problems with the flow and operation of the EGR system leading to performance issues including a reduction in power, reduced acceleration and decreased fuel efficiency. It can also cause vehicle emissions to increase.
Where can I find the EGR valve test?
The EGR valve in photo 3 of 4 (with the red X) is not covered by this article and is tested differently. The EGR valve in photo 4 of 4 (with the GREEN check mark) is the one covered by this article. If you need the EGR valve test for the EGR valve marked with the X, you can find it here: