Insuffient EGR Flow
Elder User
Joined: May 2002
Posts: 778
Likes: 1
I remove the front wheels, an just set the front end on the ground gently. It will rest on the ball joints without damaging anything. If you are in the grass, i would set a pieace of wood under the ball joint nut to rest on.
Dave P.
Dave P.
New User
Joined: Aug 2004
Posts: 20
Likes: 0
P0401
Got to hand it to everyone! Dead on with the diagnosis of the P0401. Had been driving around with this code for awhile. Finally got around to trying to fix. Replaced the EGR first as I have a 97 F150 with 175k and figured it was about time. Did not solve the problem so I came here looking for other possible causes. Pulled the throttle body and elbow off as a unit, flipped it over and........ completly plugged ports. In fact looked like snake fangs, as the carbon build up was about an inch long and about the thickness of a straw from each port. Cleaned out the ports, reassembled, cleared the codes, drove about 30 miles, and no more check engine!
The whole project took about 40 minutes! Kudos to all!!
The whole project took about 40 minutes! Kudos to all!!
Laughing Gas
Joined: Nov 2003
Posts: 794
Likes: 3
I haven't been able to get the last bolt out of the elbow where it connects to the intake manifold. It is an 8mm bolt and is fairly well back under the the firewall. I tried using a universal on my socket wrench but it was too tall. How did ya'll get this bolt out?
New User
Joined: Jun 2006
Posts: 24
Likes: 0
I would like to bring this topic back up If everyone does not mind ... I have the 5.4 in a 98 E150 Club Wagon ..... 125K and a 401 code. I do not have a shop manual yet do I get at the EGR valve from the front or the rear on a van ?
I probably better check the Throttle body ports as well ... right ?
Does any van owners have any tricks they used for access these two areas ?
I appreciate your time everyone.
Harold H.
I probably better check the Throttle body ports as well ... right ?
Does any van owners have any tricks they used for access these two areas ?
I appreciate your time everyone.
Harold H.
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New User
Joined: Oct 2006
Posts: 2
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Hi all,
This is the fail condition from my yearly inspection (no check engine lights) on my '01 Escape 6cyl 4x4 that had been sitting in a garage for 3 yrs. Almost new with 23000 mi on it. Could carbon build up be the problem here too? Should I follow the procedure for clearing the TB and ports explained here?
Thanks,
Rob
This is the fail condition from my yearly inspection (no check engine lights) on my '01 Escape 6cyl 4x4 that had been sitting in a garage for 3 yrs. Almost new with 23000 mi on it. Could carbon build up be the problem here too? Should I follow the procedure for clearing the TB and ports explained here?
Thanks,
Rob
Last edited by RobTesnear; Oct 22, 2006 at 04:05 PM.
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
Welcome to the forum Rob 
With the engine idling apply vacuum to the EGR valve. If the engine stalls or almost stalls then the EGR valve and ports are probably ok and the likely culprit is the DPFE.
I've replaced lots of them on Escapes.
With the engine idling apply vacuum to the EGR valve. If the engine stalls or almost stalls then the EGR valve and ports are probably ok and the likely culprit is the DPFE.
I've replaced lots of them on Escapes.
New User
Joined: Oct 2006
Posts: 2
Likes: 0
Thanks for the prompt reply, RacerGuy. I applied vacuum to the EGR valve and the engine rough idled/almost stalled as you predicted. Will replace the DPFE ($27.99 at AutoZone) tomorrow if time allows. Bought and drove this vehicle from Portland, Or home to Houston, Tx (what a great drive). Too bad Texas registration requires I pay sales tax on this vehicle even though I bought it in Portland, Oregon. My intention was really to stay in Oregon.
Thanks for the assistance,
Rob
Thanks for the assistance,
Rob
Last edited by RobTesnear; Oct 22, 2006 at 05:30 PM.
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plex4r
Explorer, Sport Trac, Mountaineer & Aviator
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