Go Back   Ford Truck Enthusiasts Forums > Small Chassis Trucks > Explorer, Sport Trac, Mountaineer & Aviator
Sign in using an external account
Register Forgot Password?


Explorer, Sport Trac, Mountaineer & Aviator 1991-1994, 1995-2001, 2002-2005, 2006-2010 Ford Explorer

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-05-2008, 09:12 AM
rcknrbn rcknrbn is offline
Senior User
 
Join Date: Jul 2004
Posts: 136
rcknrbn is starting off with a positive reputation.
Explorer throwing codes P0401, P0402, P0133

Got a problem with my son's 1996 Explorer. 4.0 ltr, 4x4. Gas mileage has progressively dropped to horrible levels. 12-13mph on the highway. We are going do some basic stuff this weekend such as change fuel filter, air filter, etc.

However, I pulled the codes and am getting these three, even after resetting:
P0401 Insufficient EGR flow
P0402 Excessive EGR flow
P0133 EGR Oxygen sensor (I believe it was bank 1, sensor 1)

My initial thoughts are to replace the EGR valve and EGR sensor first. We are on a budget and don't want to start throwing one part after the next into it.

Any input? Thanks!
Reply With Quote
  #2  
Old 09-05-2008, 11:52 AM
5.0B2's Avatar
5.0B2 5.0B2 is offline
Senior User
 
Join Date: May 2007
Location: Helena,MT
Posts: 349
5.0B2 is starting off with a positive reputation.
Before you replace anything, clean the valve and sensor and reset the computer. Quite often this will take care of the problem.
__________________
Dean
1965 Falcon Ranchero hiPo 289 9"
1979 Lincoln Versailles 351W 4v
1984 BII 5.0FI 4R70W B/W 1356 d35 & 8.8/disks
1997 Explorer Sport 4.0 OHV
Reply With Quote
  #3  
Old 09-05-2008, 03:54 PM
marragtop's Avatar
marragtop marragtop is offline
Posting Guru
 
Join Date: May 2002
Location: Baltimore
Posts: 2,450
marragtop is starting off with a positive reputation.
If you think it's EGR related, I suggest replacing the DPFE sensor. Fairly common problem. Also, check the lines going from the DPFE sensor to the EGR tube to make sure they are cracked/clogged.
__________________
'88 F150 4x4
'91 Explorer XLT 4x4
'92 Explorer XLT 4x4
'95 Explorer XLT 4x4
If it don't = 16 (4x4), it ain't worth driving...
Reply With Quote
  #4  
Old 09-08-2008, 10:30 AM
rcknrbn rcknrbn is offline
Senior User
 
Join Date: Jul 2004
Posts: 136
rcknrbn is starting off with a positive reputation.
Update

Thanks for the replies. Was out of town all weekend so we tore into it Sunday evening.

Pulled the EGR valve, it looked surprisingly clean, very title carbon buildup, diaphram and valve seemed operational when we put a vacuum on it.

Removed the EGR sensor, the lines going to it weren't clogged but had a bunch of crud in them. The port going to the sensor looked about 1/2 clogged. Auto parts stores closed last night, we are putting one on today. We will drive it a bit and clear the codes. I'll post an update. Not sure if this is somehow tied into the P0133 oxygen sensor code or not.

Thanks.
Reply With Quote
  #5  
Old 09-08-2008, 01:39 PM
RockAuto's Avatar
RockAuto RockAuto is offline
PREMIUM SPONSOR
 
Join Date: May 2008
Posts: 151
RockAuto is gaining momentum as a positive member of FTE.
Once you figure out what part you need for your son's Explorer, check out RockAuto.com. Since our prices tend to be significantly cheaper then most dealers, and local auto parts stores, we are a great place for people on a budget.

Check us out!

Auto Parts Fast at RockAuto

Thanks!
Ashley
Reply With Quote
  #6  
Old 09-09-2008, 09:47 AM
Bear River Bear River is offline
Former ******
 
Join Date: Nov 2004
Location: Salt Lake City, Utah
Posts: 4,901
Bear River has a very good reputation on FTE.Bear River has a very good reputation on FTE.Bear River has a very good reputation on FTE.Bear River has a very good reputation on FTE.
REplace the Oxygen sensor, you should replace those about every 80,000 miles before they fail.
Reply With Quote
Old 09-09-2008, 09:47 AM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
5.4L Trouble Codes Duckman77 Expedition & Navigator 2 05-13-2013 09:37 PM
P0401 / P0402 deejdeej Ranger & B-Series 4 06-10-2010 10:51 PM
96 ford explorer Code 402 EGR miichael Explorer, Sport Trac, Mountaineer & Aviator 17 12-17-2005 11:27 AM
P0401 and P0402 codes? kc5deb 1997 - 2003 F150 8 12-09-2004 09:50 PM
OBD 11 Code P0401/P0402 ranger9496 Explorer, Sport Trac, Mountaineer & Aviator 3 06-28-2002 11:29 AM


Go Back   Ford Truck Enthusiasts Forums > Small Chassis Trucks > Explorer, Sport Trac, Mountaineer & Aviator

Tags
1995, 1996, 1997, 40, 50, aerostar, aviator, change, code, computer, explorer, f150, ford, oxygen, p0133, p0401, p0402, sensor

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump



All times are GMT -5. The time now is 12:11 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup