EGR Valve Insufficient Flow P0401
#12
09-22-2011 | 11:29 AM
Joined: Sep 2011
Posts: 2
Response from mechanic who did the job:
The intake was NOT removed and typically isn't when doing that job. Waltrip did the one on our van when I was in the hospital and I know they didn't remove ours. The standard procedure is to remove the EGR then I have a flex tool I attach to a drill. It has a stiff wire tip and I run it down in the intake to remove the carbon deposits, hence the reason for having suction up top. This prevents the deposits from getting shoved further into the intake. In rare cases, carbon builds up so solidly that you have to literally drill through it. That was not the case with your car.
The intake was NOT removed and typically isn't when doing that job. Waltrip did the one on our van when I was in the hospital and I know they didn't remove ours. The standard procedure is to remove the EGR then I have a flex tool I attach to a drill. It has a stiff wire tip and I run it down in the intake to remove the carbon deposits, hence the reason for having suction up top. This prevents the deposits from getting shoved further into the intake. In rare cases, carbon builds up so solidly that you have to literally drill through it. That was not the case with your car.
#13
09-22-2011 | 11:49 AM
Super Moderator
Joined: Oct 2010
Posts: 7,094
From: United States
The intake manifold is typically removed to access and clean the egr port from the underside of the intake manifold. Refer to Honda TSB:
"http://www.tegger.com/hondafaq/tsb/accord/A99-085.pdf"
Here are also a couple of videos:
"http://www.youtube.com/watch?v=XgfT3kuY8lc&feature=related"
"http://www.youtube.com/watch?v=1VWKvC8wYWc&feature=related"
"http://www.tegger.com/hondafaq/tsb/accord/A99-085.pdf"
Here are also a couple of videos:
"http://www.youtube.com/watch?v=XgfT3kuY8lc&feature=related"
"http://www.youtube.com/watch?v=1VWKvC8wYWc&feature=related"
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