How does the EGR system in a Ford Focus work?
How does the EGR system in a Ford Focus work?
The system works by recirculating exhaust gases back into the engine in order to lower cylinder temperatures and emissions. The EGR system has several components that work together to do this. One of these components EGR’s differential pressure feedback sensor, commonly known as the DPFE.
What to do if your Ford Focus runs rough at idle?
The fix is to seal the DPFE sensor so water cannot get in, but the way you do this will vary depending on whether the sensor is mounted on the firewall or is a tube-mounted DPFE. Remove the DPFE. Fold the insulation on the partition wall downward so it lays over the top of the EVR.
How big is the insulation on a Ford Focus?
Trace out a 2.5″ wide x 3″ tall rectangle in the insulation, starting from the bottom, and just outside of the EVR mounting lugs. Cut vertically upward from the bottom along each of the two vertical lines, stopping at the line drawn horizontally.
Why does my Ford Focus fail emissions test?
If you live in a state with vehicle emissions testing, this may be the reason why your car fails the test. With the Ford Focus in particular, the problem may be caused by water getting into the DPFE sensor, interfering with its ability to accurately gauge pressure changes in the EGR system.
The system works by recirculating exhaust gases back into the engine in order to lower cylinder temperatures and emissions. The EGR system has several components that work together to do this. One of these components EGR’s differential pressure feedback sensor, commonly known as the DPFE.
The fix is to seal the DPFE sensor so water cannot get in, but the way you do this will vary depending on whether the sensor is mounted on the firewall or is a tube-mounted DPFE. Remove the DPFE. Fold the insulation on the partition wall downward so it lays over the top of the EVR.
Trace out a 2.5″ wide x 3″ tall rectangle in the insulation, starting from the bottom, and just outside of the EVR mounting lugs. Cut vertically upward from the bottom along each of the two vertical lines, stopping at the line drawn horizontally.
If you live in a state with vehicle emissions testing, this may be the reason why your car fails the test. With the Ford Focus in particular, the problem may be caused by water getting into the DPFE sensor, interfering with its ability to accurately gauge pressure changes in the EGR system.
