answersLogoWhite

0


Best Answer

Because it never fixed it to begin with. Just because the light stayed out for a couple of days does not mean that it ever fixed. The computer has to see the problem occur through several drive cycles consequtively before it sets a code and turns on the light. This can take several days. My guess is that you have something else wrong with the EGR system that is causing the computer to see little or no activity at the DPFE sensor whenever it commands the EGR on. And it is probably NOT the EGR valve. Ford EGR valves seldom fail. There is one other possibility that you installed the DPFE backward. I would pull it off, and make sure the small diameter neck on the sensor is one the small diamter hose and the big diameter neck is on the big diameter hose. Otherwise, you probably have something causing little or no flow in the EGR system such as an EGR control malfunction, or a stopped up EGR passage in the intake manifold area.

User Avatar

Wiki User

โˆ™ 2007-09-21 02:56:05
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: Why would brand new dpfe sensors in 2001 Duratec Taurus temporarily fix obd2 p0401 and p1401 and then notoriously fail after few days throwing same error codes again?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How many oxygen sensors are there on a 1997 mercury sable duratec 3.0 dohc engine with dual exhaust?

there are 4 o2 sensors on the gen.3 sables, one off each manifold, and one before each cat.


How do you repair the ABS on a Kia?

it all depends whats wrong with it, it may be the brain of the system or it could just6 be your wheel speed sensors throwing it off


What are the differant types of smart sensors?

The different types of smart sensors include pressure sensors, electrical conductivity sensors, dissolved oxygen sensors, turbidity sensors, pH sensors, temperature sensors and ORP sensors.


What sensors does a car have?

There are many types of sensors in cars. Some include parking sensors, blind spot monitors, water sensors, and tire pressure sensors, temp sensors, oil pressure sensors, Oxygen sensors, .


What is mechanical sensors?

sensors for mechanics


What sensors does the laguna have?

melvsta here, how longs the page, loads, speed sensors, air pressure sensors, o2 sensor, parking sensors, wheel sensors, etc


What sensors does the robot have?

The sensors that an engineer puts on a robot are entirely dependent upon the functions that the engineer perceives that the the robot will be called upon to perform. Some, but not all, of the sensors may be: proximity sensors, pressure sensors, light sensors, magnetic sensors, a camera, temperature sensors, accelerometer, speed sensor... The question isn't, "what sensors does a robot have", but rather, "what sensors does the engineer think that the robot should have?"


How many gyroscopic sensors does the Segway have?

5 gyroscopic sensors and 2 tilt sensors.


Why are sensors called sensors?

because it just is


What sensors do assistive robots have?

They don't have sensors.


How do you reset all sensors in a 2001 S430?

What sensors??? Tire pressure sensors? You can reset the tire pressure sensors through the instrument cluster


Where is the PCV valve on the 2000 2003 Mercury Sable Duratec engine?

It is located on the drivers side crankcase, just below the upper intake manifold. You will need to remove the air filter assembly, the throttle cables, and you might need to move the other bar that is connected with maybe 5 sensors, to be able to get to it.

People also asked