Originally posted by Huntervf:
For about 2 months now I've had a CEL with code 401...EGR flow insufficient.
It seems that I have the same car (96 Contour V6 SE ATX) and am having the exact same problem (P0401). So far, I have replaced:
- EGR valve
- EVR (EGR vacuum regulator)
- DPFE (differential pressure feedback EGR).
I still get the code though.
I have also checked most of the plastic/rubber vacuum hoses and they all seem fine.
If you find a solution, please post it. Originally posted by Huntervf:
...had the EGR system all cleaned out...
How did they do that? Which parts did they clean?
Originally posted by 2X95SEs:
I ran some mechanics wire through mine and then soaked it with carb cleaner.
What is "mechanics wire" and where can I get it?
Where did you "run" the wire through?
Originally posted by spgoode:
Did they take off the throttle body and clean out the passages that are exposed? I think there are three that enter where the throttle body meets the intake.
I just took the TB (throttle body) off today and looked behind it (into the UIM (upper intake manifold). I did not see much buildup and did not see any "EGR passage" that people talk about.
There were three small passages that enter behind the throttle body, but none of them were for the EGR system. There was a passage that came from the bottom of the UIM which seems to come from the evap hose. There were another two passages that came from the top of the UIM that seemed to come from the two black vacuum lines on top of the UIM. And all of theses passages were not clogged up.
I stuck my fingers into the UIM and felt around and could not find any "EGR passage". I even stuck a mechanics mirror into the UIM to see if I could find the elusive "EGR passage", to no avail.
Anyone have any suggestions???