Question about 2001 Ford Taurus
Code 0401 egr, also engine seems to missfire or hesitate at higher rpm (4000)
Ok this is a pretty inexpensive problem if you have some basic mechanical skills, and tools. The 0401 code is usually triggered by the egr valve sticking open, or carbon deposits clogging the port into the intake. This acts like a vacuum leak and causes a random misfire situation. Go to your autoparts store and buy an egr valve gasket and a throttle body gasket. Remove the egr vlave and inspect the pintle (the plunger dealie inside there) push it in several times with a small screwdriver and check for sticking. If it appears to be sticking, scrape out what carbon you can and if it has a torx indention in the pintle insert a torx driver of appropriate sixe and turn back and forth while pushing in and out on the pintle to clean. use some carb cleaner to finish cleaning and reinstall egr with new gasket. IF it's NOT stuck, all is not lost but it gets a little harder. If the valve shows no signs of sticking, you will then need to remove the throttle body from the intake, try to do this without unplugging any wires if possible. You can then use a piece of wire (coathanger works well) to clear the port between the egr valve port and intake, remember to stuff some shop rags into the intake before cleaning so carbon bits don't get in there. after clearing the port, reassemble with new gaskets and you're good.
Posted on Nov 11, 2012
Most likely cause is the DPFE sensor for your code. The misfire is probably unrelated.
Posted on Nov 17, 2009
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Posted on Jan 02, 2017
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