Notices
1997 - 2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator Discussion

Update! New Code -- P1131

Thread Tools
 
Search this Thread
 
Old Jan 19, 2009 | 09:08 PM
  #1  
solley's Avatar
solley
Thread Starter
|
New User
Joined: Aug 2004
Posts: 22
Likes: 0
Update! New Code -- P1131

Thanks to those who helped before with my PCV tubing replacement on my 99 Expy 5.4. See previous thread if you're interested. https://www.ford-trucks.com/forums/8...-dead-rig.html

So, I finally got the tubing and valve replaced, but had to remove or loosen just about everything around the throttle body. It started right up the night I got it fixed. The next night, I took it for about a 10-15 minute test drive to see if the CEL returned, it didn't. Thought I was out of the woods.

Next morning on way to work, 3 minutes in, CEL back on. Code is P1131.

Suggestions? Anything I may have done wrong in replacing the PCV tubing? Need to replace the O2 sensor? Front or back? Driver or passenger? Clean the MAF sensor? Misfire? New plugs? So many options....

Thanks.

- Solley
 
Reply
Old Jan 19, 2009 | 10:15 PM
  #2  
madsonp's Avatar
madsonp
Moderator
20 Year Member
Photoriffic
Liked
Joined: Dec 2005
Posts: 2,814
Likes: 147
From: Billings, Montana
Club FTE Gold Member
See if this helps. TSB 01-9-7 HO2S Service Tips
 
Reply
Old May 27, 2009 | 11:50 PM
  #3  
solley's Avatar
solley
Thread Starter
|
New User
Joined: Aug 2004
Posts: 22
Likes: 0
Sorry for the delay, but this late post may help someone down the road...

It was the O2 sensor, passenger side in front of the cat converter. Bought the part for around $50, tried to install but I suck and you need a special tool, so I took it to a random shop and they installed for $75.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
oachs83
1999 - 2016 Super Duty
2
Mar 6, 2022 12:51 AM
rustybuttrusty
3.8 & 4.2L V6
0
Feb 2, 2016 03:39 PM
Blondie08
1997 - 2006 Expedition & Navigator
4
Oct 21, 2008 02:40 PM
t0mkat
1997 - 2006 Expedition & Navigator
3
Jun 24, 2007 05:35 PM
gisound
1997 - 2006 Expedition & Navigator
2
Sep 23, 2004 10:59 PM




All times are GMT -5. The time now is 05:09 AM.

story-0
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-1
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-2
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-3
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-4
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-5
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-6
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-7
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-8
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-9
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE