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EGR VALE

Tiny
RUFUSPORTER
  • MEMBER
  • 1999 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
I have a 1999 ford F-150 and my check engin light is on so I pluged my obII to it and it gave me a code P0401.I looked the code up and it came back that my EGR might be bad. So my question to you is if I change it will that fix my problem?
Friday, January 14th, 2011 AT 12:05 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
A code P0401 most likely means one or more of the following has happened
There is a blockage in the EGR (tube), most likely carbon buildup
The EGR valve is faulty
The EGR valve may not be opening due to a lack of vaccuum
Possible Solutions
In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.
Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's, There should be a noticeable difference in RPM's with the EGR open
Clean out the EGR valve and/or tubing to remove deposits
Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
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Friday, January 14th, 2011 AT 12:14 AM
Tiny
RUFUSPORTER
  • MEMBER
  • 14 POSTS
THANK YOU SO MUCH!
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Friday, January 14th, 2011 AT 12:25 AM
Tiny
RUFUSPORTER
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  • 14 POSTS
THANK YOU SO MUCH!
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Friday, January 14th, 2011 AT 12:27 AM

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