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

O2 Sensor Code Po133

Old Oct 19, 2004 | 10:38 PM
  #1  
Msp541's Avatar
Msp541
Thread Starter
|
Senior User
Joined: Dec 2003
Posts: 213
Likes: 0
Question O2 Sensor Code Po133

Hi All;

I need some help with a O2 sensor on my 1999 Mercury Mountaineer V-8 AWD truck, the check engine light came on and the code read (P0133) and the code is a O2 SENSOR CKT SLOW RESPONSE BANK 1 SENSOR. Can someone help me out which sensor is that? I know i have 4 sensors on my converters and want to make sure i get the right one, greatly appreicate all help and answers.
 
Reply
Old Oct 20, 2004 | 11:42 AM
  #2  
ranger88a's Avatar
ranger88a
Elder User
Joined: Feb 2004
Posts: 811
Likes: 0
Bank 1 is always on the cyl #1 side. You probably have a lazy upstream o2 sensor on bank 1.
 
Reply
Old Oct 20, 2004 | 12:34 PM
  #3  
Msp541's Avatar
Msp541
Thread Starter
|
Senior User
Joined: Dec 2003
Posts: 213
Likes: 0
Ok so thats the one on the top or the bottom and thats the left side right? Im not too familiar with this stuff so thats why im asking. As for upstream what are you referring to? Thanks for the help!
 
Reply
Old Oct 20, 2004 | 04:23 PM
  #4  
ranger88a's Avatar
ranger88a
Elder User
Joined: Feb 2004
Posts: 811
Likes: 0
Upstream is closest to the engine, downstream is always after the cat. bank 1 is on the #1 cyl side (on ford thats rh side of the engine from drivers seat). On transverse engines,(front wheel drive) Cyl #1 is on rh side as if you were standing behind the engine (cowl side). Hope this helps.
 
Reply
Old Oct 21, 2004 | 03:15 PM
  #5  
Msp541's Avatar
Msp541
Thread Starter
|
Senior User
Joined: Dec 2003
Posts: 213
Likes: 0
thank you for the help!!!
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
the real big daddy
Excursion - King of SUVs
21
Oct 26, 2015 11:15 AM
pnp522
Modular V8 (4.6L, 5.4L)
3
Jul 15, 2015 04:40 PM
sweetace1
Explorer, Sport Trac, Mountaineer & Aviator
1
Apr 24, 2014 06:43 AM
MCGA
Modular V8 (4.6L, 5.4L)
5
Apr 4, 2012 01:23 PM
svtcobra041
1997 - 2003 F150
2
Jul 15, 2010 09:19 AM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 06:03 PM.

story-0
Rezvani's Latest Post-Apocalytic 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 | 2026-05-30 18:33:59


VIEW MORE
story-1
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-2
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-3
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

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


VIEW MORE
story-4
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-5
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-6
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-7
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-8
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-9
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE