po401

Thread Tools
 
Search this Thread
 
Old 12-05-2008, 06:42 PM
  #1  
1st Gear
Thread Starter
 
gmarllc's Avatar
 
Join Date: Dec 2008
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
po401

I have a 2002 Acura MDX with a 3.5L engine. I have a code PO 401, insufficient EGR flow. I have 132,000 miles. What can I check?
Old 12-05-2008, 10:35 PM
  #2  
Instructor
 
formula1's Avatar
 
Join Date: Mar 2005
Age: 57
Posts: 156
Likes: 0
Received 0 Likes on 0 Posts
Your EGR port is probably clogged. You need to clean your intake manifold. There is big writups in the TL 2gen forum on this site. Pretty sure there is a DIY laid out. Just search Seafoam and there should be lots of threads on it. It's a common problem with our cars. Hopefully this helps. I took my intake manifold apart and really cleaned it and then i run seafoam in the gas and also run it thru the vaacum port about every 3000 miles. Thanks F1
Old 12-05-2008, 10:50 PM
  #3  
Instructor
 
akord 97's Avatar
 
Join Date: Apr 2004
Location: Chicago, IL
Posts: 221
Likes: 0
Received 1 Like on 1 Post
EGR valve or EGR ports.
Old 01-13-2009, 09:57 PM
  #4  
Advanced
 
DasTeknoViking's Avatar
 
Join Date: Dec 2008
Location: Chicagoland
Posts: 85
Likes: 0
Received 0 Likes on 0 Posts
EGR ports have to be cleaned. Its a bit different from a TL/CL. Those have a different intake manifold design from that of the MDX.

There are not parts that have to be replaced actually.... you can clean the plenum cover gasket where the carbon deposits collect.

Let me know if you need any help.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
turbogor
2G TL (1999-2003)
45
01-21-2016 04:45 PM
natesezgoblue
1G CL (1997-1999)
1
02-08-2013 05:14 AM
HerTL
1G TL Problems & Fixes
3
11-12-2011 04:01 PM
freebieman
2G TL Problems & Fixes
23
02-22-2011 05:57 PM
jfarabaugh
2G RL (2005-2012)
11
01-26-2010 09:45 PM



Quick Reply: po401



All times are GMT -5. The time now is 08:51 AM.